Thai-Singapore International School.

What has changed here recently

Samut Prakan is the one province in this guide where the school field is genuinely unstable — a school closed in July 2026, another changed its leaving qualification, a third opened a secondary campus. This section records what a directory listing is most likely to be wrong about.

Nothing verifiable has changed recently, which in this province is itself worth stating. TSIS's difficulty is not churn but opacity: unusually little about it is confirmable from primary sources, and most of what circulates about it comes from directories rather than the school.

Where this school stops

Year 13 (age ~18), per the school's own curriculum pages.

What a leaver actually holds

The curriculum label and the leaving qualification are different things, and in this province they diverge more than anywhere else covered. For a family that may move country again, this line is the decision.

Cambridge IGCSE and the Cambridge ICE Award, then AS and A Level.

Where the campus actually is

1000 Moo 5, Srinakarin Road, Samrong Nuea, Mueang Samut Prakan, Samut Prakan 10270

On Srinakarin Road at Samrong Nuea, in the same broadly rail-served corridor as TSI rather than the Bangna-Trad school belt. The MRT Yellow Line runs along Srinakarin. As with TSI, name the station and test the journey rather than trusting a published walking time — we have not measured one.

Area guides families use for this school run: Samrong · Theparak · Bang Na (Samut Prakan side)

The curriculum pathway, stage by stage

• Nursery to Primary 6 — the Singapore Ministry of Education curriculum, trilingual.
• Secondary — Cambridge IGCSE, leading to the Cambridge ICE Award.
• Ages 16 to 18 — Cambridge AS and A Level.

Accreditations & authorisations

Worth separating: an examination-board authorisation (Cambridge, IB, College Board) means a school may enter pupils for those exams. A whole-school accreditation (WASC, CIS, NEASC, Cognia, ISQM) assesses the school itself. A membership is neither. Both matter; they are not the same claim — and in Samut Prakan three of the ten schools publish no accrediting body at all.

• NONE NAMED. No accrediting body appears on the school's own site.
• AUTHORISED — Cambridge International.
• The 'two-time Silver Mark Awardee of Education Development Trust' line that appears in directory listings is an award, not an accreditation, and does not come from the school's own site.

Religious character

Publishes nothing.

Boarding

None published.

Who it suits

Families who want the Singapore primary curriculum and, unlike at SISB Suvarnabhumi, want it in a school that continues to Year 13 on the same site — subject to confirming that the sixth form is genuinely running and taught on campus, which we could not verify.

What we could not verify — and where sources disagree

We publish these openly rather than smoothing them over. A school guide that hides its uncertainty is not much use to a family making a decision this big.

• No accrediting body is named anywhere on the school's own site. That is a meaningful gap for a school claiming a full Nursery-to-A-Level provision.
• The roll of around 1,400 students, roughly 300 staff and a 45,000-square-metre campus that appear in directory listings are not published by the school and could not be verified.
• Whether AS and A Level are actually delivered on campus, and by whom, could not be verified — several of the school's own secondary and contact pages returned no readable content. Given how often a small sixth form in Thailand turns out to be blended or distance-taught, ask specifically how Years 12 and 13 are staffed and where the teaching happens.
• Name collision with TSI International School — see that entry. Check the domain and street address before contacting either.

Ask every Samut Prakan school this

• Is this school still operating, under this name, this year? Samut Prakan is the one province in this guide where a school on families' shortlists closed — VERSO ceased operations on 31 July 2026 — and directories still list it as enrolling. Check the school's own homepage for a closure or rebranding notice before you do anything else.
• What qualification does a Grade 12 or Year 13 leaver actually hold? Not the curriculum label — the qualification. Raffles moved from Advanced Placement to the IB Diploma without the directories noticing, TCIS displays an IB logo while holding only candidate status, and D-PREP names no leaving qualification at all.
• Where does this school stop? SISB Suvarnabhumi ends at Primary 6 and awards nothing, despite being marketed across the Bang Kaeo property corridor as an international school.
• Is the school ACCREDITED, or AUTHORISED, or a MEMBER? Ask for the body, the status word and the expiry date. Three of the ten schools here name no accrediting body at all, one is disputed between WASC and NEASC, and one is somewhere between CIS membership and CIS accreditation.
• If boarding matters, is it a boarding house on this campus? SISB's boarding is real but sits at a different campus in Bangkok, and Concordian's residency programme cannot be confirmed as currently operating. ASB Green Valley and Wycombe Abbey are the ones publishing houses on site.
• Which province is the campus actually in, and which campus am I contacting? Almost every school here markets itself as Bangkok. Several groups run a Bangkok campus and a Samut Prakan campus under one brand with different provision — ASB, SISB, TSI and D-PREP all do.
• How long is the drive at 7am, from the address you are actually considering? The school belt spans kilometre 7 to kilometre 15 on Bangna-Trad plus a separate Samrong cluster. Those are not interchangeable at rush hour.
• Does the school publish a bus route that reaches you — or only a catchment claim? Only D-PREP publishes actual routes. Everyone else has a bus with no published coverage, which cannot be planned around.

Sources & References

• Ministry of Education, Thailand

Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.