The Guide
Sat, 16 May 2026

Cities / Bangkok / Trinity International School Bangkok (TRIS)

Trinity International School Bangkok (TRIS)

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…


Curriculum
American
Fees, annual
THB 250–322k
Ages
3 to 18
Pupils
~400
Founded
2003

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.

Strengths

  • American curriculum pathway for families seeking US-style education
  • Student-teacher ratio suggests manageable class sizes
  • Established presence in Bangkok's international education sector

Considerations

  • 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

Fee Age Type Amount
K1 3 Annual THB 249,595
K2 4 Annual THB 249,595
K3 5 Annual THB 249,595
Grade 1 6 Annual THB 288,440
Grade 2 7 Annual THB 288,440
Grade 3 8 Annual THB 288,440
Grade 4 9 Annual THB 288,440
Grade 5 10 Annual THB 288,440
Grade 6 11 Annual THB 322,310
Grade 7 12 Annual THB 322,310
Grade 8 13 Annual THB 322,310
Grade 9 14 Annual THB 322,310
Grade 10 15 Annual THB 322,310
Grade 11 16 Annual THB 322,310
Grade 12 17 Annual THB 322,310
Application Fee One-time THB 40,000
Enrollment Fee (K1-K3) One-time THB 80,000
Enrollment Fee (Grade 1-12) One-time THB 110,000

  • Public family and student comments are mixed and informal. Positive comments mention affordable international schooling, friendly community, clean facilities, basketball courts, and approachable peers.
  • Some local summaries flag the high proportion of Japanese students, which may matter for families looking for a fully English-speaking peer environment.
  • The school has limited serious parent-review depth compared with larger Bangkok schools, so the available signal is thin and should be read cautiously.

Head of school

Mrs. Jannet Chayasutabutr

Mrs. Jannet Chayasutabutr serves as Headmaster of Trinity International School Bangkok, overseeing the K-12 Christian institution.

Accreditations

  • Western Association of Schools and Colleges (Accrediting Commission for Schools) 01
  • TH_ONESQA 02

  • AP 2022 60% scored 3 or higher
  • SAT 2022 EBRW 410-800, Math 520-800, Total 1100-1540.

30 Sukhumvit Soi 36 Lane 2, Khlong Tan, Khlong Toei, Bangkok 10110, Thailand

School website