How much is annual tuition for a child aged 3–5 at NIST International School?

655,200 THB per year (928,700 THB in the first year, including one-time fees).

How much is annual tuition for a child aged 18–18 at NIST International School?

1,137,800 THB per year (1,436,300 THB in the first year, including one-time fees).

NIST International School

Watthana, Bangkok · Ages 3–19 (Kindergarten–Sixth Form)

On Sukhumvit Soi 15 in Bangkok's Watthana district, this full-continuum IB curriculum school (PYP, MYP, DP) was founded in 1999 and enrolls about 1,800 students from over 95 nationalities, with an IB Diploma average of 36 points and a 97% pass rate.

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Cost per year

655,200 THBFollowing years

First year: 928,700 THB

Ages	First year	Following years
	928,700 THB	655,200 THB
	1,119,000 THB	845,500 THB
	1,167,700 THB	894,200 THB
	1,234,500 THB	961,000 THB
	1,317,400 THB	1,043,900 THB
	1,411,300 THB	1,137,800 THB
	1,436,300 THB	1,137,800 THB

First year includes one-time fees such as registration and deposit

Additional fees that may apply

These are not included in the figures above. They are charged only in certain cases — not to every family — so read the note on each line to see when it applies.

Deposit575,000 THB, one-time
Campus Development Deposit (CDD), refundable within 45 days of withdrawal; alternatively, an annual Campus Development Fee of 60,500 THB can be paid instead (non-refundable); students who enroll in term 2 and choose the annual payment option pay only half, 30,250 THB
Elementary25,000 THB per year
Term meal plan for primary level (morning snack + lunch); secondary students buy their own food at the cafeteria, averaging 130-150 baht per day
School busThe school does not publish an amount
Free shuttle to BTS Asoke/MRT Sukhumvit; private transport is a separate contract with Montri Transport (price not disclosed)

Location

Watthana, Bangkok · Open in Google Maps

Basic information

Curriculum	IB
Language of instruction	English
Class size	21 (max 24)
Nationalities	95
Founded	1999
Accreditation	CIS, IB World School, ISAT, NEASC, ONESQA
Student count	1800
Organisation type	Not-for-profit
Website	https://www.nist.ac.th

Admissions

Intake	Applications open	Deadline	Status
August	—	2026-12-15	Waitlist — For families in Bangkok, applications for the next academic year should be submitted by mid-December; review begins in January; if no place is available, applicants go on the wait pool.