Sarasas Witaed Rangsit School.

Where this school stops

This is Pathum Thani’s first question, not its last. Three of the province’s eight schools end at roughly age eleven — including two of the best-known names in the AIT and Thammasat corridor.

Grade 12, roughly age 18 -- a complete pathway, but to a Thai national qualification rather than IGCSE, A-Level, the IB Diploma or a US diploma. That distinction matters more than the age does if your child expects to apply to universities outside Thailand.

Where the campus actually is

169/2 Moo 1, Rangsit-Nakhon Nayok Road, Lam Phak Kut, Thanyaburi District, Pathum Thani 12110

On Rangsit-Nakhon Nayok Road in Thanyaburi, the same eastward corridor as SIAM International School -- the two are realistic alternates on the school run, at very different price points and with very different leaving qualifications.

Rail: today, and in 2029

The SRT Dark Red Line currently terminates at Rangsit. Contracts for the 8.84 km extension to Thammasat University’s Rangsit campus — four stations at Khlong Nueng, Bangkok University, Chiang Rak and Thammasat University Rangsit Campus — were signed in May 2026, with construction expected to start in July 2026 and service targeted for 2029.

Not on current or planned rail. Rangsit-Nakhon Nayok Road runs east from Rangsit; the Red Line Phase II extension runs north up Phahonyothin. The existing Rangsit terminus is the closest rail Lam Phak Kut families will have, and it is still a road journey away.

Area guides families use for this school run: Rangsit & Future Park · Outer Housing Estates (Moobans)

The curriculum pathway, stage by stage

• Kindergarten through secondary on the Thai national curriculum.
• Delivered bilingually in English and Thai on the Sarasas Witaed English Program model -- Thai curriculum content, English medium.
• Leads to Thai national qualifications rather than an international leaving qualification.

Accreditations & authorisations

Worth separating: an examination-board authorisation (Cambridge, IB, CBSE, College Board) means a school may enter pupils for those exams. A whole-school accreditation (WASC, CIS, COBIS, Cognia, ISQM) assesses the school itself. Both matter; they are not the same claim — and an accreditation can cover only part of a school’s year range.

• Thai Ministry of Education -- this is a Thai private school running the national curriculum bilingually.
• Part of the Sarasas Witaed network. Network-level scale claims (20-plus campuses, 30,000-plus students nationwide) describe the group, not this campus, and we attribute them accordingly.
• No international whole-school accreditation is published for this campus.

Religious character

None published for this campus.

Boarding

None advertised at this campus.

Who it suits

Thai-foreign families and budget-conscious families who want English-medium instruction without full international-school fees, and who are content with a Thai national qualification. It is the most affordable route to English-medium schooling covered in this guide.

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.

• This school was the one row on BAANLYY's Pathum Thani hub with NO profile link -- the exact signal that flagged a school that did not exist in Pattaya and a school with a corrupted name in Chiang Rai. Here the finding is the good one: Sarasas Witaed Rangsit is real, with a Thai-language name, a street address in Lam Phak Kut and a published telephone number. An unlinked row is a row nobody has verified; it is not automatically a phantom.
• The most important thing a foreign family should understand is the leaving qualification, not the fee. This is a Thai national curriculum school taught bilingually. That is a legitimate and popular choice; it is a different product from the international schools it sits beside in the same table.
• Sarasas operates several similarly named campuses in and around Pathum Thani (including Sarasas Witaed Klong Luang and a Sarasas Witaed Pathum Thani). Confirm you are contacting the Rangsit campus at Lam Phak Kut, Thanyaburi, and not a sibling school -- colliding names within one network are exactly how directory contamination starts.

Ask every Pathum Thani school this

• Does this school go as far as your child needs -- or is it a staging post? Three of the province's eight schools stop at roughly age 11, including the two best-known names in the AIT and Thammasat corridor. If your child is nine, you are choosing two schools, not one. Ask which schools families here typically move on to, and whether the school helps with that transfer.
• Ask about rail in two tenses. Today the Red Line terminates at Rangsit and no Pathum Thani campus has a station. Contracts for the extension to Thammasat Rangsit -- with a station at Khlong Nueng -- were signed in May 2026, with service targeted for 2029. Whether that is relevant to you depends entirely on how long you are staying.
• Check what the school year actually is. Global Indian International School runs an April-to-April Indian academic year; every other school here runs an August start. Moving mid-cycle between the two costs a child half a year in either direction.
• Is the accreditation whole-school, or is it an examination-board authorisation, and does it cover the year group your child is entering? Thai International School's WASC accreditation is stated by the school as covering Nursery to Grade 6 -- so a programme above that line is not inside the same claim.
• Is it a school, or a programme inside a school? The Invictus International Programme is an international pathway delivered within Sathitpathum Demonstration School, not a standalone international campus. That is a real and legitimate model, and it is not the same thing a directory listing implies.
• Drive the run at 07:00 on a weekday before you sign a lease. Phahonyothin, Rangsit-Nakhon Nayok Road and the Rangsit junction at rush hour bear no relation to the same roads at midday, and Pathum Thani's school geography is spread across four districts.
• Ask what the year group's actual size is this year, not the school's total roll. Several schools here are small by design, which many families want -- but you should know the number before you decide.
• If faith or national curriculum matters to you in either direction, ask directly. Pathum Thani's eight schools include British, American, IB, Indian CBSE, Cambridge-bilingual and Thai-bilingual routes, and they are not interchangeable.

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.