When searching for an international school in Bangkok, many discerning families prefer a long-established, prestigious school with a proven track record over a newer school with the latest facilities.
Alongside ISB and Bangkok Patana, Ruamrudee International School (RIS) has firmly established itself as a 'Tier 1' legacy international school in Thailand.
Founded in 1957, the school's name, Ruamrudee (meaning 'Union of Hearts' in Thai), reflects its educational philosophy, which emphasizes not only academics but also character and ethics. This approach has been cherished for decades by executives from around the world and affluent Thai families.
In this article, the international school admissions and overseas university placement experts at ELT will provide a thorough analysis of RIS's strengths, including its hybrid American, IB, and AP curriculum, the reality of its Catholic school culture, the commuting challenges to its suburban Minburi campus that many expatriate families face, and a detailed breakdown of its tuition fees.
1. What is RIS (Ruamrudee)? Over 60 Years of History and Catholic Values
RIS currently operates two campuses: the main Minburi campus in the eastern suburbs of Bangkok and the newer Ratchapruek campus, established in 2019 in the western suburbs. (This article will primarily focus on the historic Minburi campus).
A 'Values-Based Education' Welcoming All Faiths
RIS was founded by the Redemptorist Fathers of Thailand. Some families may worry, 'Will my child, who is Buddhist or from a non-religious background, feel out of place at a Catholic school?' However, there is no need for concern.
RIS promotes an 'Interfaith' philosophy. While Catholic students take Religion classes, all other students attend 'Values' classes. This educational approach, which fosters universal morals such as compassion, service learning, and ethics, resonates strongly with parents from diverse cultural backgrounds who wish for their children to 'grow not just academically, but also as good people.'
The Spacious and Lush Minburi Campus
Relocated from the city center in 1992, the Minburi campus boasts a vast 29-acre site. With separate buildings for each school section, a competition-sized swimming pool, and modern sports and arts facilities, it offers a spacious and open campus life that is hard to find in the high-rise international schools in the city center.

2. The 'Ultimate Hybrid Curriculum': A Choice of American, IB, and AP Pathways
The greatest academic strength of RIS lies in its flexibility, allowing students to select and blend 'IB' and 'AP' options with its core American curriculum in High School.
The Best of Both Worlds: Combining IBDP and AP
After building a strong foundation in Grades 9-10, students in Grades 11-12 (the final two years of high school) can choose from the following pathways:
- IBDP (International Baccalaureate Diploma Programme): A rigorous two-year program for students aiming for top universities in the UK and elsewhere.
- AP (Advanced Placement): A program of individual university-level courses that is advantageous for university applications in the United States.
- Hybrid (RIS Diploma): A flexible route that allows students to combine individual IB Certificate courses, AP courses, and regular high school courses to specialize in their areas of strength.
Is the IB (International Baccalaureate) Too Difficult? Understanding the PYP/MYP/DP System and How to Avoid Dropping Out
The Complete Guide to AP (Advanced Placement): Strategies for Top University Admissions, Differences from IBDP, and How to Gain an Edge
Exceptional University Placements (US, UK, Japan, and Thai Medical Schools)
Thanks to this flexible curriculum, RIS graduates gain admission to top universities worldwide.
- IB Scores (Class of 2025): 97% pass rate, average score of 34 points (world average is approx. 30). Highest score of 45. 54% of students earned a Bilingual Diploma.
- United States: Ivy League and other top universities including Stanford, Yale, Brown, Columbia, UPenn, and UC Berkeley.
- United Kingdom: Imperial College London, LSE, UCL, University of Edinburgh, and more.
- Thailand: An outstanding track record for placements in medical and dental schools at Chulalongkorn University, Mahidol University, and others (over 39 placements).
- Japan: Demonstrates strong results in entrance exams for returnee students at universities like Waseda, Sophia, Hosei, Nagoya University, and Tokyo Institute of Technology.
3. Hurdles for International Families: Location (Commute) and Admissions/EAL
While RIS has an impeccable history and track record, there are two practical challenges that international families often face when considering enrollment.
Challenge 1: The Reality of Commuting from Sukhumvit to Minburi
The Minburi campus is located approximately 22km from the Sukhumvit area, a central part of Bangkok popular with many expatriate families.
While a direct car ride might take around 45 minutes, the reality for those using the school bus is an early morning pickup between 6:00 and 7:30 AM, with a one-way, door-to-door commute of 60 to 90 minutes (highly dependent on Bangkok's traffic conditions).
[Solution: Utilizing the Boarding Option]
RIS offers an on-campus residence (The Residence @ RIS) for students in Grades 7-12. A popular option among affluent families is for parents to enjoy the convenience of living in Sukhumvit while their older children board during the week, allowing them to dedicate their commuting time to studies and extracurricular activities.
Challenge 2: The Limits of EAL (English as an Additional Language) Support for Older Students
RIS has an inclusive culture and provides robust English language support through its English Language Development (ELD) program.
However, intensive support through 'sheltered' (pull-out) classes is most comprehensive up to Grades 9-10. For Grades 11-12, when the IB and AP programs begin, the focus of support shifts. Therefore, transferring into these upper grades with a beginner to intermediate level of English is structurally very high-risk. The admissions assessment includes the MAP test (Reading and Math) and a writing sample, making prior preparation in Academic English essential.
4. A Realistic Look at RIS Tuition and Initial Costs (Simulation)
While RIS is a top-tier school, its fee structure is relatively balanced compared to some of the newer, ultra-high-cost schools.
Breakdown of First-Year Costs (High School Estimate, Based on 2026-27 Fees)
The following is an estimate of the total required 'cash-out' for the first year of enrollment in High School (Grades 9-11) at the Minburi campus (in Thai Baht: THB).
Fee Item | Amount (THB) | Refundability & Notes |
Application Fee | 5,000 | Non-refundable |
Registration Fee | 200,000 | Equivalent to an entrance fee. Non-refundable. |
Learning Resources Fee | 40,000 | One-time fee. Non-refundable. |
Re-enrollment Deposit | 50,000 | Conditionally refundable upon graduation/withdrawal. |
Annual Tuition + Mandatory Fees (Grades 9-11) | 786,000 | Tuition + Campus Development Fee (total per term) |
Total First-Year Cash-Out | 1,081,000 THB | *Estimated mandatory costs for the first year. |
[Please Note]
The figures above cover the basic fees payable to the school. In addition, families should budget for extra costs such as the English Language Development (ELD) support fee (approx. 60,000 THB/year) if required, school bus fees, uniforms, and, for older students, the non-refundable external examination fees for IB and AP courses.
Conclusion: A Premier Legacy School in Bangkok that Nurtures Both Heart and Mind
Ruamrudee International School (RIS) is one of Bangkok's finest institutions, masterfully balancing a cutting-edge hybrid curriculum (IB/AP) with a holistic education that cultivates timeless values of compassion and ethics.
However, to fully benefit from the educational value it offers, strategic preparation is essential. This includes managing the commute time to its suburban campus (or utilizing the boarding option) and proactively developing a high level of English proficiency before entering the upper grades.
"I'd like to discuss the pros and cons of commuting from Sukhumvit versus the boarding option."
"I want an assessment to determine whether the IB or AP curriculum is a better fit for my child."
"I need practical English preparation for the RIS admissions tests (MAP test and writing)."
If you have these or similar concerns, we encourage you to schedule a private consultation or trial lesson with ELT. Our team of professionals, who specialize in Thai international school admissions and overseas university placement, can provide comprehensive support, from determining the optimal time to apply to RIS to planning your family's commute and lifestyle.




