How many international primaries in Bangkok
Bangkok has roughly 40 international or English-language primary schools, the deepest primary cluster in mainland Southeast Asia. Around 25 sit within full through-schools running from age 3 to 18, where families can enrol at reception and progress all the way to sixth form on the same campus. A further 15 operate as dedicated primary or junior schools without an attached secondary, with the expectation that families transfer at Year 6 or Year 7 to a separate senior school.
Cohort sizes vary by an order of magnitude. Bangkok Patana primary runs at roughly 1,200 students from Foundation Stage to Year 6, the largest single international primary cohort in Thailand. The mid-cluster of Shrewsbury Riverside, NIST primary and Harrow Bangkok runs at 500 to 800 students per primary. The dedicated junior schools and the boutique central Sukhumvit primaries typically sit at 150 to 400 students. This depth of supply means most central Bangkok families can reach at least four sensible primary options inside a 30-minute drive, an unusually rich position by Asian capital standards.
Fees and the primary tiers
Primary international school fees in Bangkok divide into three tiers. The value tier runs THB 350,000 to THB 550,000 a year and covers the smaller international primaries, the bilingual stream primaries inside larger schools and most non-IB or non-British curriculum primaries. The mid tier sits at THB 550,000 to THB 750,000 and captures the established through-school primaries at the upper end of the bilingual cluster and the lower years at the premium schools. The premium tier, THB 750,000 to THB 950,000, includes the full Year 6 fees at NIST, ISB, Bangkok Patana, Harrow and Shrewsbury, the five flagship through-schools.
Three Bangkok-specific cost factors matter at primary. Non-refundable enrolment fees of THB 200,000 to THB 400,000 are standard at the premium schools, payable once. School bus fees of THB 60,000 to THB 90,000 a year are nearly universal given Bangkok traffic. And the gap between Year 1 and Year 6 fees at the same school is typically 25 to 35 per cent, which catches new families budgeting from current rather than future fees. For wider Bangkok fee context see our Bangkok international school fees guide.
Shortlisting a Bangkok primary?
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Illustrative example schools
The schools below are illustrative, not a ranking. Each holds at least one of CIS, WASC, NEASC or BSO accreditation and has at least 15 years of operating history in Bangkok.
Bangkok Patana School primary in Bangna runs roughly 1,200 students from Foundation Stage through Year 6, the largest international primary cohort in Thailand. EYFS in early years and the UK National Curriculum from Year 1, with strong music, sport and Mandarin from Year 3 onwards. Most Patana primary children continue into Patana secondary on the same campus.
NIST International School on Sukhumvit Soi 15 runs IB Primary Years Programme from age 3 to Year 6, the city's longest-established PYP school. Roughly 700 primary students, with progression into NIST middle school and IB Diploma.
International School Bangkok in Nichada Thani follows a US elementary core from kindergarten through grade 5, the city's flagship US-curriculum primary. Roughly 700 elementary students, with progression into ISB middle school and the IB Diploma layered onto the US high school programme.
Shrewsbury International School Riverside on Charoen Krung runs EYFS to Year 6 within a full through-school that takes children to A Level. The original 2003 campus serves the riverside and Sathorn districts. The 2018 Shrewsbury City Campus on Rama IX added a second Bangkok site focused on early years and primary.
Harrow International School Bangkok in Don Mueang runs EYFS to Year 6 within the wider Harrow through-school, founded 1998 and the oldest Harrow international campus. Strong boarding option from Year 9, distinctive Harrow uniform and house system through the primary years.
For a curated editorial pick see our best international schools in Bangkok long read.
Which primary framework
The choice of primary framework in Bangkok is the most consequential schooling decision before sixth form, because the framework shapes everything from teaching style to homework volume to assessment cadence. The UK National Curriculum with EYFS at the front end is the largest single framework in Bangkok, used at Patana, Shrewsbury, Harrow, Brighton College, Bromsgrove, Regents, St Stephen's, Bangkok Prep and most dedicated junior schools. It leads naturally into IGCSE in Years 10 and 11 and A Level or IB Diploma at sixth form.
The IB Primary Years Programme, used at NIST, ISB elementary IB stream, Wells and Concordian, is inquiry-led with a transdisciplinary approach. It leads naturally into MYP at middle school and the IB Diploma at sixth form. The US elementary core, used at ISB and Ruamrudee, is content-rich and assessment-light through grade 5, leading into US middle and high school with Advanced Placement and the IB Diploma at exit. For the wider primary frameworks across cities see our curriculum hub. Families weighing primary against secondary should also see the Bangkok British curriculum hub and the Bangkok IB hub.
Admissions and waitlists
The structural intake at Bangkok primaries is August, with most schools opening registration for the following August intake in October of the preceding year. A second smaller intake operates in January at the start of the second semester. The premium through-schools, including Patana, NIST, ISB, Harrow and Shrewsbury, run a January application deadline followed by a rolling waitlist through the summer.
Waitlist intensity at primary follows a predictable pattern. Year 1 entry at Patana, NIST, ISB, Harrow and Shrewsbury can run 12 to 24 months out, particularly for sibling-blocked applications. Year 2 to Year 5 entry is usually possible within four to six weeks at most schools given the natural churn of expatriate movement. Year 6 entry tightens again as families lock in for a clean transition to secondary on the same campus. Admissions tests, where used, focus on age-appropriate reading and reasoning for native English speakers and on English-as-an-additional-language placement for non-native speakers. For the broader Bangkok admissions picture see the Bangkok city hub.
Frequently asked questions
How many international primary schools are there in Bangkok?
Bangkok has roughly 40 international or English-language primary schools, of which around 25 sit within through-schools running from age 3 to 18 and 15 operate as dedicated primary or junior schools. The largest single primary cohort is the Foundation Stage to Year 6 cluster within British curriculum through-schools.
What age does primary school start in Bangkok?
Most Bangkok international primary schools start at age 5 in reception or kindergarten, with formal Year 1 starting at age 5 to 6. The US-curriculum schools start kindergarten at age 5 and grade 1 at age 6. Roughly 30 per cent of Bangkok primary schools include Year 7 to Year 8 inside the primary phase before transitioning to secondary.
How much do primary international schools cost in Bangkok?
Bangkok primary school fees range from THB 350,000 a year at the value-tier international primaries to THB 950,000 at the premium through-schools NIST, ISB, Patana, Harrow and Shrewsbury. Median Year 4 to Year 6 fees sit near THB 650,000.
Do Bangkok primary schools follow EYFS or IB PYP?
The largest cohort of Bangkok primary schools follows the UK National Curriculum with EYFS in early years, leading into Year 1 to Year 6. A second large cohort follows the IB Primary Years Programme inside through-schools like NIST, ISB and Wells. A smaller cohort follows the US elementary core curriculum, used principally at International School Bangkok and Ruamrudee.
When should I apply for primary school in Bangkok?
Apply 12 to 24 months ahead for Year 1 entry at the most over-subscribed schools, including Bangkok Patana, NIST, ISB, Harrow and Shrewsbury. Mid-year January and April entry is usually possible at lower year groups given expatriate movement, with offers typically issued within four to six weeks of a complete application.
