Trinity International School Bangkok (TRIS)
Key Stats
Annual Fees: US$7K – US$9K
Curriculum: American
Age Range: 3–18
Students: ~400
Location: Khlong Toei, Bangkok
Updated February 2026
In Brief
Trinity International School Bangkok appears to be a mid-tier American curriculum school serving around 450 students with 57 teaching staff, but maintains extremely low visibility in Bangkok's competitive international education market. The absence from typical parent forums and teacher discussions raises questions about its positioning compared to established Bangkok institutions.
Operating in Bangkok's crowded international school sector, Trinity International School follows an American curriculum pathway though specific details about grade levels, AP offerings, or university preparation remain unclear from available sources. The school appears to serve families seeking American-style education, with a student-teacher ratio suggesting reasonable class sizes, but lacks the extensive online presence and discussion that characterizes Bangkok's tier-one schools like ISB, NIST, or Bangkok Patana.
Unlike prominent Bangkok international schools that generate extensive parent conversations and detailed institutional profiles across expatriate forums, Trinity International maintains minimal presence in typical education comparison sites or teacher employment discussions. This limited visibility makes assessment of academic outcomes, facilities quality, or parent satisfaction challenging compared to established institutions that feature regularly in Bangkok school selection conversations.
What parents value
- –American curriculum pathway for families seeking US-style education
- –Student-teacher ratio suggests manageable class sizes
- –Established presence in Bangkok's international education sector
Points of consideration
- –Very limited online visibility compared to established Bangkok schools
- –Minimal parent or teacher discussions available for evaluation
- –Unclear positioning in Bangkok's competitive international school market
- –Limited information about academic outcomes or university placement
Annual Fees
| Year Group | Age | USDTotal Annual Fee |
|---|---|---|
| K1 | 3 | 7,787 |
| K2 | 4 | 7,787 |
| K3 | 5 | 7,787 |
| Grade 1 | 6 | 8,999 |
| Grade 2 | 7 | 8,999 |
| Grade 3 | 8 | 8,999 |
| Grade 4 | 9 | 8,999 |
| Grade 5 | 10 | 8,999 |
| Grade 6 | 11 | 10,056 |
| Grade 7 | 12 | 10,056 |
| Grade 8 | 13 | 10,056 |
| Grade 9 | 14 | 10,056 |
| Grade 10 | 15 | 10,056 |
| Grade 11 | 16 | 10,056 |
| Grade 12 | 17 | 10,056 |
Fees converted from THB. For the most up to date and accurate figures please double check with the school.
Additional Fees
| Fee | Amount |
|---|---|
| Application Fee | 1,248 |
| Enrollment Fee (K1-K3) | 2,496 |
| Enrollment Fee (Grade 1-12) | 3,432 |
Photos

Academic Results
Academic results have not been made publicly available by this school.
Extra Curriculars
Contact the school for details on co-curricular activities and facilities. Ask what a normal week looks like outside lessons for your child's interests.
Inspections & Accreditations
Inspection
No published inspection details are currently available.
Accreditations
Accreditation details are not publicly listed.
Memberships
Membership details are not publicly listed.
Student Body
Bangkok's international schools serve a diverse community of expat and local families. Contact the school for current enrolment details.
Leadership
Mrs. Jannet Chayasutabutr - Headmaster
Mrs. Jannet Chayasutabutr serves as Headmaster of Trinity International School Bangkok, overseeing the K-12 Christian institution.
