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Trinity International School

Thailand, Bangkok

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Fee Table

All the fees for Trinity International School

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Annual Fees

Name Age Fee Track
K1 3 249,595 THB
K2 4 249,595 THB
K3 5 249,595 THB
Grade 1 6 288,440 THB
Grade 2 7 288,440 THB
Grade 3 8 288,440 THB
Grade 4 9 288,440 THB
Grade 5 10 288,440 THB
Grade 6 11 322,310 THB Middle School
Grade 7 12 322,310 THB Middle School
Grade 8 13 322,310 THB Middle School
Grade 9 14 322,310 THB High School
Grade 10 15 322,310 THB High School
Grade 11 16 322,310 THB High School
Grade 12 17 322,310 THB High School

Application Fees

Name Fee Conditions
Application Fee 4,000 THB One-time, non-refundable

Enrollment Fees

Name Fee Conditions
Enrollment Fee 110,000 THB G1–G12

Additional Fees

Name Fee Conditions
General Fee 39,040 THB Depending on grade
Uniforms 1,700 THB Per set, Pathfinder and PE uniforms also required
Lunch & Morning Snack 24,400 THB K1–K3: THB 15,550; G9–12: THB 24,400
EAL Fee 30,000 THB If applicable
Parent/Teacher Association Fee 500 THB
AP Courses 15,000 THB Per subject
Re-registration Fee 15,000 THB Annually
PSAT 1,200 THB G10 & G11
School Bus 40,000 THB

Fee Breakdown

Fees
Application & Placement Test Fee: THB 4,000 (one-time, non-refundable)

One-Time Entry Fees
Enrollment Fee:
K1–K3: THB 80,000
G1–G12: THB 110,000

Development Deposit: Waived until July 31, 2026.

Registration Fee: THB 15,000 for all grades.

Books & Damage Deposit: THB 22,000 (G6–G12 only; refundable if materials are returned in good condition).

Annual Tuition Fees
K1–K3: THB 198,000
G1–5: THB 203,900
G6–8: THB 220,870
G9–12: THB 220,870

Annual Recurring Fees
General Fee: THB 36,045 – THB 39,040 depending on grade

Lunch & Morning Snack: THB 15,550 (K1–K3) to THB 24,400 (G9–12)

Parent/Teacher Association Fee: THB 500

Other Fees
EAL Fee: THB 30,000 per semester (if applicable)

Re-registration Fee: THB 15,000 annually

Uniforms: THB 1,200 – THB 1,700 per set; Pathfinder and PE uniforms also required

PSAT (G10 & G11): THB 1,200

AP Courses (HS): THB 15,000 per subject

School Bus: THB 25,000 – THB 40,000 per semester

Payment Methods
Payments are accepted via bank transfer; confirmation required from the finance office.

Refund Policy
Refunds are provided only for refundable deposits under stated conditions.
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The school at a glance
Instructs in English
Fees THB 154,250 - 220,870
Ages 3 - 18 years
Pupil numbers 450
Type Co-educational
Opened 2003
Bus Service Yes
Availability Are there places?

Trinity International School (TRIS), established in 2003 and located at 30 Sukhumvit Soi 36 in Bangkok’s residential Sukhumvit district, serves around 450 students aged 3 to 18. The school follows an American Curriculum based on California's Common Core, with the option to pursue Advanced Placement (AP) courses in upper grades. English is the language of instruction, and the school also teaches Thai and Mandarin. TRIS operates a school bus service, enhancing access from nearby neighbourhoods. The school is licensed by the Thai Ministry of Education and accredited by WASC and ONESQA. Notable strengths include emphasis on STEM (including a UC Berkeley partnership), academic enrichment through AP offerings, and a strong orientation toward service, rooted in values education.

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