Ruamrudee International School is a IB Diploma Programme / IB school in Bangkok, Thailand. Founded in 1957. It serves 1,011 students for students aged 2–18. Annual tuition ranges from $15,075 to $22,008 USD.
Explore This School
Location & Getting There
NanaSays Scorecard
Key Details
Scholarships Available
1. Griffith Scholarship: up to 30% tuition reduction for academic or visual & performing arts excellence; GPA 3.75+ for academic, 3.25+ for arts/career excellence; apply by March 31 annually. 2. Diversity Scholarship: 15% tuition reduction for families from underrepresented nationalities (both parents hold non-Thai passports); available year-round on rolling basis; limited once a nationality exceeds 10% of the student body. 3. Alumni Parents Tuition Reduction: 20% if both parents are alumni or attended RIS for 6+ years; 10% if one parent attended 1–5 years; available year-round. 4. Sibling Reduction: THB 50,000 discount on registration fee per additional child; THB 15,000 per semester per enrolled sibling. Scholarships and reductions cannot be combined.
Key facts
Fees & the true cost of attendance
Published fees
$ 15,075–$ 22,008 per year.
Budget beyond the sticker price. Assume the real annual spend is 5–15% higher than the headline fee. Hidden costs typically include: registration fee, acceptance deposit (usually one term's fees, refundable at the end of schooling), uniform + sports kit, trips and expeditions, individual music tuition, exam entry fees, travel to/from home.
Ask the Bursar for a sample "all-in" first-year invoice before committing.
About
Ruamrudee International School is a private, coeducational day school in Bangkok, Thailand, authorized as an IB World School since May 1998. The school offers the International Baccalaureate Diploma Programme with instruction in English. Students are prepared across a comprehensive range of subjects including mathematics, sciences, languages, and humanities, with examinations held in May.
School data verified by NanaSays. Last updated: April 2026.
Why Families Choose
Offers a blend of American curriculum, IBDP, and AP programmes with both day and boarding options in Bangkok.
University Destinations
Fees & Financials
| Grade / Year | Annual Fee |
|---|---|
| KG (upper) | THB 544,400~$ 14,915 |
| Pre-K to KG | THB 538,400~$ 14,751 |
| Grades 1-5 (max) | THB 718,400~$ 19,682 |
| Grades 1-5 (min) | THB 686,000~$ 18,795 |
| Grades 6-12 (max) | THB 786,000~$ 21,534 |
| Grades 6-12 (min) | THB 716,000~$ 19,616 |
Conversions to USD use exchange rates as of April 2026.
Original currency: THB 538,400 - 786,000. Application fee: $140.
Admissions Process
- 1Optionally attend a school tour or open house. 2. Submit the online application and pay the application fee. 3. Provide required documents: passport (with visa for immigrants), birth certificate, past three years of school report cards (in English or certified translation), and baptismal certificate for Catholic students; Thai applicants also need household registration and ID. 4. Schedule assessments and interviews appropriate to grade level: developmental observation for Early Years, readiness screening and W-APT for KG–Grade 1, MAP testing in Reading and Math plus a writing test for Grades 2–12, and WIDA-Screener for ELD learners. 5. Receive admission decision with acceptance letter, registration forms, and payment invoice. 6. Complete registration and pay required fees by the invoice due date.
Admissions Details
If classroom seats are full, applicants may be placed on a waitlist. Being waitlisted does not guarantee a spot and is dependent on availability as spaces open. If not waitlisted, the school notifies parents and suggests reapplying in the next cycle.
Student Life
The school requires uniforms, which are purchased at the campus uniform store.
The on-campus canteen offers a range of food from Western to traditional Thai dishes. PreK 3–Grade 1 eat in a separate canteen with a set menu. St. Thomas Café is another on-campus dining option.
Facilities & Programmes
Wellbeing & Safety
RIS section counselors engage directly with students to monitor wellbeing, identifying personal, social, and academic issues while collaborating with teachers and parents. The Student Study Team oversees coordinated support for mental wellness. Support involves teachers, parents, and in some cases external professionals to address each student's individual needs.
RIS maintains a dedicated Child Safeguarding Task Force led by a Designated Safeguarding Lead (DSL), supported by deputies, counselors, and section principals. It enforces a safeguarding code of conduct aligned with the Thai Child Protection Act and the UN Convention on the Rights of the Child. All staff undergo annual safeguarding and conduct training, and recruitment includes police checks. Electronic gate systems, ID card access, CCTV monitoring, and reporting protocols support on-site child protection.
Student Demographics
Curriculum by Stage
| Stage | Curriculum | Notes |
|---|---|---|
| Middle School | IB MYP | — |
| Elementary School | American Diploma | — |
| Early Childhood (Ages 2-6) | EYFS | Early Years Campus on Phraya Suren Road for ages 2-6 |
| High School (Grades 11-12) | IB Diploma | 37 IB classes and 15 AP classes offered |
School Background
private
Catholic