Location
Sukhumvit
Ages
Kindergarten to Grade 12
Language of Instruction
English
Yearly Fees 2026/27
Grades 1-5: 200,250 THB
From 154,250 (K1-K3) to 220,870 (Grades 9-12). Full fee table
Trinity is a Christian, student-centered school licensed by Thailand's Ministry of Education and a member of the International Schools Association of Thailand, positioning it within the country's broader network of ISAT-affiliated international schools rather than operating in isolation.
The school combines academic study with a stated focus on character development, meaning its program is built around more than just exam results, with explicit attention to values and personal growth as part of the regular curriculum rather than a separate co-curricular track.
As a Christian school, Trinity shares some similarities in mission with ICS, Bangkok Christian International, and Ekamai, though each of these faith-based schools has its own specific denominational background, campus culture, and curriculum details that families researching this category of school should compare individually.
Families drawn to Trinity are generally specifically seeking that combination of Ministry of Education licensing, ISAT membership, and an explicit character-development focus alongside standard academics.
Trinity International School fees 2026/27
Annual tuition in Thai baht, read from the school's own fee schedule on 18 September 2026.
| Year group | THB per year |
|---|---|
| K1-K3 | 154,250 |
| Grades 1-5 | 200,250 |
| Grades 6-8 | 203,900 |
| Grades 9-12 | 220,870 |
One-time fees at entry
- Application fee4,000
- Registration or entrance fee110,000
- Refundable deposit22,000
Charged on top of tuition
- General feesCompulsory40,100 to 78,080 / yr
- Lunch and morning snackCompulsory15,550 to 24,400 / yr
- Re-registration fee (every February)Compulsory15,000 / yr
- EAL support60,000 / yr
Included in tuition
Lunch, Snacks
Not included
English language support, School bus, Residential trips
Worth knowing: The clearest fee document of any school, with a blank calculation worksheet for parents. The development deposit of 80,000-110,000 is struck through and waived until 31 July 2027. A 15,000 re-registration fee falls every February to hold next year's seat.
Source: Trinity International School fee schedule. Fees change every year, so confirm with the school before you budget. What international school really costs in Bangkok