Concordian International School is a full IB World School in the Bang Na corridor of Greater Bangkok, founded in 2001 and notable as Thailand's only fully trilingual international school, teaching in English, Chinese and Thai. It runs the IB Primary Years, Middle Years and Diploma Programmes for students from around age three to eighteen, within the market mapped on our Bangkok city hub. On fees it sits in the mid to premium band.
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At a glance
Curriculum and academics
Concordian is a through school built entirely on the International Baccalaureate, running the Primary Years Programme in the early and primary years, the Middle Years Programme through lower secondary and the IB Diploma in the final two years. What makes it distinctive is the trilingual model: an English and Chinese immersion in the early and primary years, with English becoming the main medium of instruction from upper primary, and Thai taught throughout. For families who value Mandarin alongside English, this is one of the few schools in the city designed around it.
The school is authorised by the International Baccalaureate for all three programmes and accredited by the New England Association of Schools and Colleges and the Council of International Schools, alongside Thai Ministry of Education registration. For how the IB continuum compares with British and American routes, and how it differs from a single Diploma year, see our IB curriculum guide.
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Concordian International School fees
Concordian International School sits in the mid to premium band on our Bangkok international school fees guide, reflecting its full IB continuum and trilingual staffing without reaching the very top of the market. Tuition rises by year group, so treat any single figure as indicative and request the current schedule from admissions.
Budget for the standard Bangkok components alongside tuition: a registration or application fee, a refundable deposit, a capital or development levy, uniform and an optional bus service. Our fee calculator helps turn the headline tuition into a realistic annual total once those line items are added.
Admissions
The academic year begins in August, so the principal application window runs through the preceding spring and summer for the following August start. Mid year entry is possible where space exists. Applications generally include recent school reports and an age appropriate placement assessment, and given the trilingual model the school will look at a child's language background to place them well.
The practical first steps are to register interest, share recent reports and tour the campus. Families considering entry in the upper years should discuss how the Chinese and English balance works at that stage, since the immersion model is strongest in the early years.
Location and who goes there
Concordian sits in the Bang Kaeo area off the Bangna-Trad highway at kilometre 7, part of the Bang Na corridor that runs from eastern Bangkok into Samut Prakan. It moved to this purpose built campus in 2006, and the surrounding belt has since filled with housing estates and amenities aimed at families, with expressway links back into central Bangkok.
The community reflects the trilingual offer, drawing families who want Mandarin alongside English, including Thai, Chinese and wider international households across the eastern suburbs. For the broader picture of the Bang Na corridor and the schools clustered along it, see the Bangkok city hub.
Reviews
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Frequently asked questions
How much are Concordian International School fees?
Concordian International School sits in the mid to premium band on our Bangkok fees guide. Tuition rises by year group, so confirm the current schedule with admissions and budget for a registration fee, a deposit, a capital levy and an optional bus service alongside tuition.
What curriculum does Concordian International School follow?
Concordian is a full IB World School offering the Primary Years Programme, the Middle Years Programme and the IB Diploma. It is also Thailand's only fully trilingual school, teaching in English, Chinese and Thai.
Is Concordian International School accredited?
Concordian is authorised by the International Baccalaureate for all three programmes and is accredited by the New England Association of Schools and Colleges and the Council of International Schools, alongside Thai Ministry of Education registration.
When do Concordian International School applications open?
The academic year starts in August, so the main application window runs through the preceding spring and summer. Mid year entry is possible where places exist. Assessment usually combines recent reports with an age appropriate placement and a language check given the trilingual model.
Where is Concordian International School located?
Concordian is in the Bang Kaeo area off the Bangna-Trad highway at kilometre 7, in the Bang Na corridor of Greater Bangkok in Samut Prakan, a residential belt popular with international and Thai families.
