Thai Sikh International School, almost always shortened to TSI, is one of Bangkok's longer established British curriculum schools, founded in 1985 and teaching from the early years through to A Level. Since 2017 it has been managed by International Schools Services, and it features among the British options on our Bangkok city hub. Its appeal for many relocating families is a recognised British pathway at fees below the city's premium flagships.
This page is independent. No school pays to be listed on GlobalSchoolGuide, and the facts below were researched from the school and public sources at the time of writing, with anything unconfirmed marked not published.
At a glance
Curriculum and academics
TSI delivers the British curriculum from the Early Years Foundation Stage through the primary and lower secondary years, into IGCSE in Years 10 and 11 and A Levels at the top. IGCSE papers are set and marked by Cambridge International Examinations, giving a qualification that travels well, and the school reports a steady record at this stage, though families should ask the school directly for current results rather than relying on any single year.
The British structure here is the conventional route into United Kingdom and international universities, taught to a diverse community of more than thirty nationalities. For how A Levels compare with the IB Diploma and the American High School Diploma, our British curriculum guide sets out the trade offs.
Planning your budget?
Use our fee calculator to turn headline tuition into a realistic annual total once deposits, transport and extras are added.
Thai Sikh International School (TSI) fees
TSI sits in the more affordable band on our Bangkok international school fees guide, one of the reasons it is often shortlisted by families who want a full British curriculum without the premium price of the best known names. Tuition rises with each year group and is highest at A Level, so treat any single figure as indicative and confirm the current schedule with admissions.
Budget for the usual Bangkok extras alongside tuition: a registration fee, a deposit, uniform, examination entry in the IGCSE and A Level years 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 starts in August, so the main application window runs through the preceding autumn and winter, with through year entry where places allow. Assessment is age appropriate and draws on previous reports, with English and subject readiness checked for older applicants and A Level subject choices discussed with sixth form entrants.
As a more affordable option with a long history, TSI sees steady demand, so early enquiry helps for popular year groups. The practical first steps are to register interest, share recent school reports and arrange a tour of the relevant campus.
Location and who goes there
TSI's roots are in the Wongwian Yai area on the Thonburi side of the river on Prachathipok Road, with senior provision in the Samrong Nua area towards Bearing in the east of the city. That spread means the right campus depends on where a family lives, and both sites rely more on road access than on a single rail station, so commute planning is worth doing before you commit.
The community is notably diverse, with more than thirty nationalities and a long standing local and expatriate mix that reflects the school's history and its accessible fees. For how these districts compare with central and riverside Bangkok, and the schools near each, return to the Bangkok city hub.
Reviews
We do not yet have verified parent reviews for this school. GlobalSchoolGuide is independent and no school pays to be listed, so we publish reviews only once we can confirm they come from real families. If your child attends or has attended TSI, we would value your first hand account. Share your experience through the school reviews hub and help the next relocating family decide with better information.
Frequently asked questions
How much are Thai Sikh International School (TSI) fees?
TSI sits in the more affordable band on our Bangkok fees guide, below the city's premium flagships. Confirm current rates with admissions and budget for a registration fee, a deposit, uniform, examination entry and an optional bus service.
What curriculum does Thai Sikh International School follow?
TSI follows the British curriculum from the early years through the English National Curriculum, IGCSE in Years 10 and 11 and A Levels at the top, with IGCSE papers marked by Cambridge.
Who manages Thai Sikh International School?
TSI has been managed by International Schools Services since 2017. The school was originally founded in 1985. Confirm the current arrangement directly with the school.
When do Thai Sikh International School applications open?
The school year starts in August, so most families apply through the preceding autumn and winter, with through year entry where places allow and age appropriate assessment.
Where is Thai Sikh International School located?
TSI has roots in the Wongwian Yai area on Prachathipok Road on the Thonburi side, with senior provision in the Samrong Nua area near Bearing in eastern Bangkok.
