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NIST International School

(โรงเรียนนานาชาตินิสท์)

Verified by Viktoriya Lindner in May 2026
฿

1st-Year Total

฿1.51M–฿1.97M

All-in estimate

Curriculum

IB

Global Citizen Diploma, IB Diploma...

Level of Education

3–18 yo

Kindergarten → High School

Language of Instruction

English

Students

1,820

Across all ages

NIST is the school that comes up in almost every conversation about international education in Bangkok, and for good reason. Founded in 1992 with UN support, it was Thailand's first full IB World School and remains the only school in the city offering the complete IB Continuum (PYP, MYP, Diploma) on a non-profit basis. Around 1,820 students from 77+ nationalities, with a deliberate cap ensuring no single nationality exceeds 30% of the student body, the most genuinely diverse community of any school in Bangkok. The campus is on Sukhumvit Soi 15, five minutes walk from both Asok BTS and Sukhumvit MRT, the most central location of any tier-one school in the city. None of that comes without trade-offs. Admissions are competitive, with waitlists at most year levels and a formal assessment at secondary. First-year costs, including the ฿575,000 refundable Campus Development Fee, typically reach ฿1.5M-฿2.0M, the highest all-in entry cost in this comparison. For families where IB, location, and genuine diversity are the filters, there is no close equivalent in Bangkok.

1st Year Tuition Fees (2025–2026)The school hasn't published 2026–2027 fees yet. We're displaying 2025–2026 rates as a reference; these may be updated once the new figures are released.

Estimated cost for any age group entering this school

Admission & Enrollment฿848,500
Application Fee฿6,000
Assessment Fee฿2,500
Registration Fee฿265,000
Campus Development Fee฿575,000
Annual Tuition฿628,200 – ฿1,094,500
Additional Fees (Mandatory)฿30,000
Exam Fee (Non-refundable)฿25,000
Uniform (Non-refundable)฿5,000
Total 1st Year Estimated฿1,506,700 – ฿1,973,000
(฿575,000 refundable)

Tuition fees (2025–2026)

AgeGradeAnnual Tuition
3–4Early Year 1฿628,200
4–5Early Year 2฿628,200
5–6Early Year 3฿796,700
6–7Grade 1฿842,800
7–8Grade 2฿842,800
8–9Grade 3฿842,800
9–10Grade 4฿842,800
10–11Grade 5฿842,800
11–12Grade 6฿923,700
12–13MYP 1฿923,700
13–14MYP 2฿923,700
14–15MYP 3฿1,003,800
15–16MYP 4/5฿1,003,800
16–17DP 1฿1,094,500
17–18DP 2฿1,094,500

What You Should Actually Know About NIST International School

NIST International School is Bangkok's first and only full, not-for-profit IB World School, established in 1992 with the support and guidance of the United Nations.

Located on Sukhumvit Soi 15 in the Watthana district, NIST offers the complete IB Continuum (PYP, MYP, and Diploma Programme) to over 1,800 students aged 3 to 18, representing more than 77 nationalities.

Governed by a parent-elected foundation, the school reinvests all revenue into operations and campus improvements. NIST is Thailand's most diverse international school community, and its graduates consistently achieve IB scores well above global averages, gaining entry to leading universities worldwide.

The school's holistic learning programme integrates academics, wellbeing, service, expeditions, and over 300 extracurricular activities.