How much is annual tuition for a child aged 2–5 at Prem Tinsulanonda International School?

456,200 THB per year (642,200 THB in the first year, including one-time fees).

How much is annual tuition for a child aged 15–19 at Prem Tinsulanonda International School?

861,800 THB per year (1,047,800 THB in the first year, including one-time fees).

Prem Tinsulanonda International School

Ages: 2–19Kindergarten–Sixth Form
Location: Mae Rim, Chiang Mai

Cost per year

From456,200 THBFollowing years

First year: 642,200 THB

Ages	First year	Following years
	642,200 THB	456,200 THB
	672,200 THB	486,200 THB
	716,200 THB	530,200 THB
	830,200 THB	644,200 THB
	878,000 THB	692,000 THB
	963,800 THB	777,800 THB
	1,005,800 THB	819,800 THB
	1,047,800 THB	861,800 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.

Intensive English Programme (IEP)696,000 THB per year
IEP program fee, paid in 4 installments of 174,000 baht each (paid in place of the main program's tuition)
EAL Support88,000 THB per year
EAL Support Fee, 22,000 THB/installment (4 installments/year) — mandatory for students the school assesses as needing additional English support
School bus68,400–82,800 THB per year
17,100–20,700 THB/installment (4 installments/year), based on the distance between home and school, for students using pickup/drop-off transport only; price may be adjusted according to fuel costs
Grade 3–12350,000 THB per year
Weekly boarding (5 days) 87,500 baht/installment (4 installments/year), includes accommodation, food, and academic support; requires a Contingency Account of 20,000 baht
Grade 3–12478,000 THB per year
Full boarding (7 days) 119,500 baht/installment (4 installments/year), includes weekend activities; flexi boarding available for day students at 2,000 baht/night

Location

Mae Rim, Chiang Mai · Open in Google Maps

Official website Call Directions

Basic information

Founded in 2001 on a roughly 100-acre campus in Mae Rim, Chiang Mai, Prem Tinsulanonda was Thailand's first school to offer all four IB programmes (PYP/MYP/DP/CP). It teaches Early Years through Grade 12, with 7-day, weekly, and flexible boarding options from Grade 3 upward.

Curriculum	IB
Language of instruction	English
Nationalities	40
Founded	2001
Accreditation	CIS, IB World School, NEASC
Website	https://ptis.ac.th

Nationality mix: 40 nationalities within the school community (official website); 70% of teachers hold a master's degree or higher

Admissions

Intake	Applications open	Deadline	Status
Rolling	—	Rolling	Unknown — Admits year-round; steps: enquire -> submit the online application -> interview + academic assessment -> results announced within 3-5 business days -> confirm the place with payment.

Admission assessment: Interview · Family interview · Subject test

Daily life

Uniform	Yes
School lunch	Yes
School bus	Yes
Boarding	Yes

Activities: The Exploria extracurricular program offers more than 100 activities (some, such as golf, tennis, football, SAT prep courses, and private music lessons, have an additional fee); has a house system and the Prem Panthers sports teams