The Complete Guide to Seisen International School: Tuition, IB Results, Comparison with Sacred Heart, and Admission Strategies [2026 Edition]
Updated:
Published:
2026 Latest
Author: Tatsuya Tanaka|Representative Director, ELT Japan
"If I'm sending my daughter to an international school, I want a calm environment where she can truly develop her academic potential."
For parents who feel this way, all-girls international schools in Tokyo are a very attractive option. Among them, Seisen International School, located in the quiet residential area of Setagaya, is known for successfully combining a warm, at-home atmosphere with world-class university placements.
"If you're considering a girls' international school in central Tokyo, should you choose Seisen or the International School of the Sacred Heart?"
"Is admission possible for families holding only Japanese citizenship?"
"How strong is its all-through IB programme?"
In this article, ELT, with a proven track record of helping numerous students gain admission to Seisen, provides a comprehensive overview of the school and a detailed guide to its admission strategies, based on official data and our unique coaching expertise.
In this article, we'll take a deep dive into the features and reputation of Seisen International School, comparing it with its rival, ISSH. We've also included the latest 2025 IB scores and admissions information to help you with your school selection process.
1. In-Depth Comparison: Seisen vs. ISSH — What Are the Key Differences?
First, let's break down the crucial differences between these two schools that many parents consider. The biggest distinction lies in their curriculum (IB vs. AP).
Comparison Point
Seisen
ISSH
Location
Yoga, Setagaya (Quiet residential area)
Hiroo, Shibuya (Central area with many embassies)
Curriculum
Full IB School (PYP/MYP/DP) European-style, inquiry-based learning
American-style + AP Program North American-style, liberal arts focus
Educational Features
Japan's first all-girls IB Continuum school. Fosters critical thinking through consistent "inquiry-based learning" from kindergarten to high school.
Based on a traditional American curriculum, with 22 AP (college-level) courses available in high school.
University Placement Trends
Globally diverse. Strong placements in Europe, Canada, and top Japanese universities (Waseda, Keio, Sophia, ICU) using the IB Diploma.
Strong North American focus. About half of graduates attend US universities, with many placements in Ivy League and other top schools.
School Culture & Atmosphere
Warm and at-home. A smaller school (approx. 700 students) with close student-teacher relationships and a family-like atmosphere.
Traditional and cosmopolitan. Reflecting its Hiroo location, it has a multinational and sophisticated community, including many from embassy families.
【Key Takeaways for Choosing】
Who is Seisen a good fit for? Students who are naturally inquisitive and enjoy deep-diving into a single topic. Families considering universities in Europe, Canada, or Japan.
Who is ISSH a good fit for? Students who want the flexibility to study a wide range of subjects. Families primarily targeting universities in the United States.
When you hear "at-home atmosphere," you might wonder if the academics are less rigorous. However, Seisen's academic performance is among the best of all international schools in Japan.
Exceptional IB Diploma Pass Rate
The results of the graduating class of 2025 demonstrate the high level of education.
Average Score:35 points (World average: 30.5 points)
Pass Rate:97.7% (World average: approx. 80%)
The IB Diploma is notoriously difficult to obtain, yet at Seisen, nearly all students earn the full diploma and achieve scores well above the global average. The school consistently produces high-scorers with 40+ points (out of 45) each year, indicating an extremely high quality of instruction.
Placements at Top Universities Worldwide
Leveraging these high IB scores, graduates go on to attend prestigious universities across the globe.
International: Harvard, Princeton, Columbia, Stanford, MIT, Oxford, Cambridge, and more.
Domestic (Japan): Waseda, Keio, Sophia (with Catholic school recommendations), ICU, and more.
Particularly noteworthy is the school's strength in STEM fields. Despite being an all-girls school, many graduates go on to study medicine and engineering, developing their talents in science and math in an environment free from gender bias.
3. The Reality and Reputation of a Catholic Girls' School
We'll address common questions from parents, such as "Is the religious influence strong?" and "Aren't social dynamics difficult at an all-girls school?"
Is it okay for non-Christians?
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
The Unique Leadership Opportunities of an All-Girls School
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
4. Admissions and English Language Support
What kind of preparation is necessary for those wishing to enroll at Seisen?
Admissions for Kindergarten (Montessori) to Early Elementary
Admissions for this age group focus more on observational assessments and interviews rather than written tests.
Playdate Format: During a play-based session with teachers, children are observed on their ability to follow instructions, share toys, and engage with activities curiously.
English Proficiency: For Kindergarten (K1-K3), native-level English is not required. If a child can say "Hello" and respond to simple instructions from a teacher, they have a good chance of being accepted.
Admissions for Upper Elementary to High School
As students get older, the required level of English proficiency increases significantly.
MAP Test: Applicants will take the MAP (Measures of Academic Progress) test, an aptitude test in English and Math used by many international schools.
Essay & Interview: The ability to write logically and articulate one's motivations during an interview is assessed.
EAL (English as an Additional Language): While English support classes are available, spots are very limited. For transfers into upper grades, sufficient English proficiency to keep up with mainstream classes is generally a prerequisite.
Conclusion: A School Where Warmth and Intellect Coexist
Seisen International School is a place where the "warm, character-focused education" typical of a Catholic school masterfully blends with the "rigorous inquiry-based learning" of an IB World School. While it might sometimes be perceived as a flashy "finishing school for girls," it is, in reality, more like a "dojo"—a training ground where students from diverse backgrounds challenge each other and grow into independent young women.
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Aiming for Admission to Seisen International School? Consider "ELT"
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
多様な進路に対応
The results of the graduating class of 2025 demonstrate the high level of education.
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
平均スコア
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
合格率
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
受験者数
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
40点以上取得者
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
世界平均
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
世界平均との差
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
2025年
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
35点
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
97.7%
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
43名
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
8名
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
30.58点
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
+4.4点
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
2024年
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
34点
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
97.8%
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
非公開
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
4名
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
30.32点
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
+3.7点
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
2023年
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
34点
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
97.6%
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
非公開
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
5名
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
30.24点
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
+3.8点
The results of the graduating class of 2025 demonstrate the high level of education.
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
比率
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
Japan & Asia
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
39%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
US & Canada
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
35%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
UK & Europe
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
14%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
その他
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
12%
The results of the graduating class of 2025 demonstrate the high level of education.
2025年プロフィールでさらに詳細な内訳
進学先国・地域
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
比率
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
Japan
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
35%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
USA
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
21%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Canada
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
14%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
UK
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
8%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Netherlands
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
4%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Hungary
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
4%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Australia / New Zealand
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
4%
The results of the graduating class of 2025 demonstrate the high level of education.
Matriculating Students 2022-2025の具体的大学名
地域
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
大学名
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
日本
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
東京大学、京都大学、早稲田大学、慶應義塾大学、上智大学、ICU（国際基督教大学）、立教大学
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
米国
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Amherst College、NYU、Northwestern、Notre Dame、UC Berkeley、UCLA、UC San Diego、University of Michigan
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
カナダ
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
UBC、McGill University、University of Toronto、University of Waterloo
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
英国
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
King's College London、UCL、University of Edinburgh、University of Bristol、University of Warwick、University of Manchester
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
アジア
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Chinese University of Hong Kong、HKU、KAIST、Yonsei University
The results of the graduating class of 2025 demonstrate the high level of education.
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
清泉（Seisen）
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
聖心（ISSH）
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
1. カリキュラム
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
IB一貫（PYP/MYP/DP）+ IGCSE選択可
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
米国式 + AP（24科目）
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
2. 学業実績の見え方
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
IB35点（過去3年トラックレコード）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
AP4.27/5、3+が93%
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
3. 進学傾向
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
多地域分散（日アジア39%、米加35%、英欧14%）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
米国トップ志向
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
4. 日本家庭の制度的入学難易度
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
海外在住歴2年以上で経路あり
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Gr9以下は本人または親の片方が非日本国籍必須
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
5. 校風
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
アットホーム / 小規模 / 家庭的
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
伝統 / フォーマル / お嬢様学校
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
6. 卒業要件の宗教教育
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Religious and Cultural Exploration 3単位
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Values 1単位
The results of the graduating class of 2025 demonstrate the high level of education.
1. In-Depth Comparison: Seisen vs. ISSH — What Are the Key Differences?
6. 学費の完全解説 2025-2026年度
清泉の学費は、東京の他のインターナショナルスクールと比較して中位帯に位置します。
年間学費（2025-2026年度）
学年
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
授業料
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
建物維持費
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
年間合計
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
幼稚部（全日）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,200,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
100,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,300,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
初等部（Grade 1-5）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,350,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
100,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,450,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
中等部（Grade 6-8）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,370,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
100,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,470,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
高等部（Grade 9-12）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,370,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
100,000円
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,470,000円
The results of the graduating class of 2025 demonstrate the high level of education.
入学時のみ必要な初期費用
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
金額
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
出願料（Application Fee）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
20,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
登録料（Registration Fee）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
300,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
土地建物開発費（Capital Levy）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
500,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
初期費用合計
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
820,000円
The results of the graduating class of 2025 demonstrate the high level of education.
出願料を除く2項目（80万円）は入学時のみ支払う費用で、退学時の返金はありません。
初年度総費用シミュレーション
Grade 1-5に新規入学する場合の最低ラインは以下の通りです。
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
金額
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
授業料（Grade 1-5）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
2,350,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
建物維持費
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
100,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
出願料
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
20,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
登録料
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
300,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
土地建物開発費
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
500,000円
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
初年度総額
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
3,270,000円
The results of the graduating class of 2025 demonstrate the high level of education.
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
Is it okay for non-Christians?
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
高齢者孤独死対策パッチ
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
体動センサーで異常を検知し家族にアラート
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
太陽光パネル自動除塵装置
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
パネル表面の埃を機械的に除去し発電効率を維持
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
藻類ブルーム対策AI装置
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
水域の藻類異常発生をAI画像認識で検知
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
災害時ドア圧警報システム
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
地震等で歪んだドアの開閉障害を事前検知
The results of the graduating class of 2025 demonstrate the high level of education.
清泉はDEIJ（Diversity, Equity, Inclusion, and Justice）を学校文化として明示しており、特にDEIJページでは"women empowerment are core elements"と明言しています。「女子校＝伝統的な女性像の継承」ではなく、「女子校だからこそジェンダー平等と女性のリーダーシップを育てる」という姿勢です。
STEM進学実績との連動
Firebirdの活動と、清泉の進学実績は明確に連動しています。
大学
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
国
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
注目分野
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
KAIST
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
韓国
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
理工系トップ大学
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
University of Waterloo
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
カナダ
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
コンピュータサイエンスの世界的名門
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
University of Michigan
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
米国
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
工学・コンピュータサイエンス
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
UC Berkeley
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
米国
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
STEM全般のトップ校
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Imperial College London（過去実績）
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
英国
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
STEM特化大学
The results of the graduating class of 2025 demonstrate the high level of education.
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
Is it okay for non-Christians?
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
Step 1
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
オンライン出願
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Step 2
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
書類審査
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Step 3
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
学校による評価
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Step 4
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Math and English assessment（Grade 1-11全員）
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Step 5
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Family Interview（家族面接）
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Step 6
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
合否判定
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
Step 7
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
入学手続き
The results of the graduating class of 2025 demonstrate the high level of education.
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
具体的に問われる内容
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
学術的好奇心
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
「最近、何に夢中になっている？」「読んでいる本は？」
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
志望動機
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
「なぜ清泉なのか」「他の学校でなく清泉を選ぶ理由」
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
家族の教育観
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
「家庭でどのような価値観を大切にしているか」
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
カトリック教育の理解
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
「Religious and Cultural Explorationを受け入れる準備があるか」
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
学校文化への適合
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
「清泉のアットホームな環境にお子様は適応できるか」
The results of the graduating class of 2025 demonstrate the high level of education.
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
やるべきこと
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
受験18ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
英語の基礎接触（簡単な挨拶、単語、絵本）
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験12ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
プレイデート形式の慣れ、生活習慣（挨拶、片付け）
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験6ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
個別面接対策、英語の自己紹介練習
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験3ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Family Interview対策、保護者の動機整理
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験1ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
面接練習、想定問答
The results of the graduating class of 2025 demonstrate the high level of education.
小学校編入（Grade 1-5）志望
時期
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
やるべきこと
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
受験12ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Math and English assessmentの基礎力構築、英語強化
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験6ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
ELTの清泉対策パッケージ申込推奨
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験3ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
過去2年成績の英訳、推薦状依頼
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験1ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Family Interview対策、英語エッセイ練習
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験当日
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Math and English assessment + 家族面接
The results of the graduating class of 2025 demonstrate the high level of education.
中高編入（Grade 6-12）志望
時期
In short, it's not a problem at all. Many of the students are not Christian. While there are daily prayers and Religious Knowledge classes, these are not intended to force belief but are positioned as part of a character education program to foster a sense of gratitude and ethics. Many parents comment positively, saying, "Through religious events, my daughter has developed a spirit of compassion and service."
やるべきこと
At Seisen, the student council president, sports team captains, and science competition leaders are all girls. By spending their formative years in an environment free from unconscious biases like "boys are better at STEM" or "leaders are men," students naturally develop the confidence that "women can be anything." In fact, it is Seisen's female students who excel in global robotics competitions and science fairs (such as the Firebird team).
受験12ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
英語をCEFR B1-B2へ、IB MYP/DPの予備学習
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験6ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
Math and English assessment対策、エッセイライティング
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験3ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
推薦状、IGCSEまたはIB継続性の確認
If you hope for your daughter to possess both kindness and intellect, and want her to take on challenges in STEM and leadership, Seisen is undoubtedly one of the best environments you can choose.
受験1ヶ月前
At ELT, our native-speaking instructors, who are well-versed in Seisen's admission trends (including Montessori-style observational assessments and MAP test preparation), will support your child's journey to acceptance. We offer comprehensive consulting, from parent interview practice to application essay guidance. Why not start with a free counseling session to assess your child's current English level and chances of admission?
面接練習、MYP/DPでの志望理由構築
The results of the graduating class of 2025 demonstrate the high level of education.
清泉の卒業要件にRelegious and Cultural Exploration 3単位が含まれることを理解し、「カトリック教育を子どもに受けさせる選択」を家族として明確に決断していることが重要です。「ノンクリスチャンだけど大丈夫？」と不安そうに尋ねるのではなく、「カトリック的な倫理観・奉仕の精神を子どもの人格教育の一部として歓迎する」というスタンスが面接で評価されます。
ELTは、Kindergarten新規入学からGrade 1-11編入、Grade 12 Sixth Form入学まで、すべての学年でSeisen合格をサポートしてきました。「IB一貫校としての清泉の入試特性」「カトリック教育の家庭との適合性」「Math and English assessmentの専門対策」を踏まえた一貫サポートを提供しています。
ELTの清泉受験対策の特徴
Math and English assessment対策: 英語の読解・作文と数学の基礎学力を、Grade別に最適化したカリキュラムで強化
Family Interview対策: 清泉のカトリック教育・IB哲学に沿った志望動機の構造化、家族面接ロールプレイ
幼稚部対策: 個別面接+行動観察に対応した、遊びを通したコミュニケーション練習
願書作成サポート: 過去2年成績の英訳、推薦状依頼の助言、エッセイ添削
編入対応: IGCSE / IB MYP / DP の継続性確認、IB予備学習
こんな家庭にELTは選ばれています
清泉と聖心のどちらが家族に合うか判断できない家庭
Math and English assessmentの対策方法が分からない家庭
Family Interviewでカトリック教育への適合性をどう語ればよいか分からない家庭
Year 6以降の編入を検討しているが、現在の英語力で足りるか判断できない家庭
1度不合格になり、次年度の再挑戦戦略を立てたい家庭
無料カウンセリングのご案内
「現在の英語力や成績で清泉の合格ラインに届くか知りたい」「Math and English assessment・面接の具体的対策をプロに任せたい」「Kindergarten新規・Grade 1-11編入・Grade 12 Sixth Formのどれが最適か診断してほしい」、こうしたお悩みに、合格実績豊富なコンサルタントが個別にお応えします。
Frequently Asked Questions
A
International schools that adopt British, American, or IB curricula do not use the concept of 'hensachi' (deviation scores). Instead, the IB Diploma Programme score (out of a maximum of 45 points) serves as an academic indicator. Seisen's 2025 DP average is 35 points, which is 4.4 points above the world average of 30.58. In terms of Japanese hensachi, this is often understood as being comparable in difficulty to the most selective combined junior and senior high schools in Japan.
A
The annual school fees, including tuition and the building maintenance fee, range from 2.3 to 2.47 million JPY (for the 2025-2026 school year, depending on the grade level). In the first year, an initial fee of 820,000 JPY is added, bringing the minimum total for Grades 1-5 to approximately 3.27 million JPY. When you add the costs for uniforms, an iPad, IB examination fees, field trips, etc., the practical total for the first year is about 3.5 to 3.8 million JPY.
A
Yes, Seisen actively welcomes families from non-Christian backgrounds. In fact, many of our current students are not Catholic. However, since the graduation requirements include 3 credits in Religious and Cultural Exploration, a willingness to accept Catholic education as part of the curriculum is necessary.
A
The official Admissions Policy explicitly states 'English communication ability for parents' as a requirement. As all communication with the school is conducted in English, it is necessary for at least one parent to be able to communicate effectively in English for practical purposes. A level equivalent to CEFR B1-B2 (Eiken Grade 2 to Pre-1) is a general guideline.
A
Yes, for Grade 1 and above, all applicants are required to take a Math and English assessment. A Family Interview is also mandatory. For Kindergarten, the assessment is in the form of an individual interview and behavioral observation.
A
Both are world-class international schools for girls, but they are fundamentally different. Choose Seisen if you are looking for a full IB education and pathways to universities in various regions; choose Sacred Heart if you prefer an AP-based curriculum with a focus on top US universities. There is also a difference in that it is institutionally easier for families with only Japanese nationality to enroll at Seisen. For more details, please refer to the 'H2-5 Seisen vs. Sacred Heart' section of this article.
A
The 2025 DP average was 35 points, with a pass rate of 97.7%, 43 candidates, and 8 students scoring 40 points or higher (official Seisen data). For the past three consecutive years (2023-2025), the school has maintained a stable record with an average score of 34-35 points and a pass rate of 97.6-97.8%, consistently exceeding the world average by 3.7-4.4 points each year.
A
There are no official fixed score requirements, but based on data from successful applicants, the following are general guidelines:
Kindergarten-Grade 2: Basic greeting level (e.g., 'Hello, my name is...')
Grade 3-5: Equivalent to CEFR A2-B1 (Eiken Grade 3 to Grade 2)
Grade 6-9: Equivalent to CEFR B1-B2 (Eiken Grade Pre-2 to Pre-1)
Grade 10-12: Equivalent to CEFR B2-C1 (Eiken Grade Pre-1 to Grade 1)
A
The full IB Diploma is a powerful passport to top universities worldwide, but it involves the burden of completing six subjects plus TOK, the EE, and CAS. On the other hand, choosing the IGCSE path offers flexibility, allowing students to obtain a British-system qualification while avoiding subjects they find difficult. We recommend making the decision by working backward from your target universities (i.e., whether they require the IB Diploma or accept applications with A-levels/IGCSEs).
A
Seisen graduates matriculate annually to top domestic universities, including those at the level of Waseda, Keio, Sophia, and ICU. Sophia University has a special admission process for designated Catholic high schools (recommendation-based admission), and Seisen is one of the eligible schools. The specific number of available spots varies by faculty and year.
A
We offer a wide variety of clubs, including the Firebird Science & Innovation Team, Model United Nations, Drama Club, Choir, various sports teams (basketball, volleyball, cross country, etc.), Medical Career Club, AI Club, and Environmental Action Club.
A
Yes, very strong. The Firebird Science & Innovation Team works on applied projects such as a 'patch to prevent isolated deaths among the elderly' and an 'automatic dust removal device for solar panels,' and has a consistent track record of sending graduates to prestigious engineering and science universities like KAIST, Waterloo, Michigan, and UC Berkeley.
A
Yes, Seisen has admission pathways for Japanese national families who have lived abroad for two or more years, or for families transferring from other international schools. In contrast, Sacred Heart (ISSH) does not accept applications from families with only Japanese nationality for Grade 9 and below (only for Grades 10-12). Due to this policy difference, it is institutionally easier for Japanese families permanently residing in Japan to enroll at Seisen. However, the student's English proficiency and the parent English requirements must still be met.
A
We recommend starting at least 12 months in advance. Starting 6 months before makes preparing for the Math and English assessment and the interview a race against time, and with only 3 months, there isn't enough time to fundamentally improve English proficiency. For Kindergarten applicants, it is safest to start preparing 18 months or more in advance, including establishing daily routines and basic exposure to English.
About the Author
Tatsuya Tanaka
Representative Director, ELT Japan
After graduating from the Department of Mechanical Engineering at the Faculty of Science and Engineering, Waseda University, he pursued graduate studies at the same university, focusing on research in computational fluid dynamics. During his graduate studies, he worked as a visiting researcher at Rice University in Houston, USA, where he was involved in fluid simulations for spacecraft. After returning to Japan, while continuing his research, he also organized career fairs at Harvard University and Imperial College London. In 2019, while still a student, he established Sekijin LLC (now ELT Education Inc.). In 2020, he partnered with the UK-based company ELT School of English Ltd. to launch an online English conversation business for the Japanese market. Since its founding, he has provided counseling to over 1,000 English language learners.
