From a single Sukhumvit campus to 2,300 students in 28 years

St Andrews International School Bangkok opened in 1997 on a site at Sukhumvit Soi 71, in what was then a quieter pocket of Bangkok's Watthana district. Since being founded that year, the school taught early years through to Year 13 on that single Sukhumvit 71 campus. The founding model was straightforward: a co-educational British day school, non-selective, running the English National Curriculum from nursery through sixth form.

The Nord Anglia Years

The school became a Nord Anglia Education school in 2012, joining the group's global network. The formal acquisition by Nord Anglia was completed in August 2013. Joining Nord Anglia brought the school into a framework of institutional partnerships that would shape its identity over the following decade, among them collaborations with The Juilliard School of Performing Arts, the Massachusetts Institute of Technology, and UNICEF, as well as the Global Campus learning platform.

At the time of the acquisition the school was already well established, but the group's resources accelerated its ambitions. By the mid-2010s, the Sukhumvit 71 campus was straining to serve an all-through school from age two to eighteen. The solution was a second site. Previously, the primary and high school had shared the Sukhumvit Soi 71 campus. In August 2017, St Andrews expanded, redeveloping a nearby private Thai school into a new purpose-built high school campus on Sukhumvit Road. That campus, conveniently located near Ekkamai BTS Station, opened in August 2017.

With the high school move complete, the Sukhumvit 71 campus became a dedicated primary school for children aged two to eleven. Primary students began the 2017 academic year with the launch of a new STEAM curriculum and the opening of new sports, arts, and language facilities. The high school, meanwhile, gained specialist rooms: design technology labs, a fitness and yoga centre, and a professional theatre. It also acquired a dedicated learner centre for IB students.

Curriculum and Accreditation

St Andrews Primary and High School follow the National Curriculum in England with modifications to incorporate aspects of the international community. Students begin at the Early Years Foundation Stage, build up to IGCSE exams in Year 11, and culminate with the International Baccalaureate Diploma Programme in Years 12 and 13. From Year 12, students can also choose the IB Career-related Programme, which integrates BTEC Level 3 vocational qualifications alongside IB courses and core components.

The school has accumulated a substantial body of external validation. St Andrews has held British Schools Overseas accreditation for ten years, and the most recent BSO inspection judged its quality of education outstanding in all areas, a standard further validated by the EDT International Schools Quality Mark. It is also accredited by the Council of International Schools. The school was the first in Thailand to receive joint accreditation from CfBT Education Trust and Thailand's Office for National Education Standards and Quality Assessment.

Inclusion has become a defining institutional focus. St Andrews is the first school outside the United Kingdom to be awarded the Inclusive School Award with Centre of Excellence status by the Inclusion Quality Mark. That status was renewed following a successful re-accreditation visit in May 2026, reflecting the school's strong and sustained commitment to inclusive education.

A separate distinction came in January 2020 in London. St Andrews International School Bangkok won the top accolade at the International School Awards as International School of the Year 2020, the result of its standout contribution to the Best Environmental Initiative category. The award recognised the school's Eco Beasts programme, designed to achieve collective and sustainable change; students create and deliver action plans addressing environmental challenges, and the school subsequently employed two dedicated sustainability coordinators to grow the initiative into the wider community. The programme expanded to include 17 local schools and 14 local sustainability organisations.

Present Day

Founded in 1997 on what is now the primary school campus, St Andrews International School Bangkok now has two locations home to over 2,000 students from more than 60 countries. The school's current roll stands at approximately 2,300. The student body is split roughly fifty-fifty between international and Thai students, and as WhichSchoolAdvisor notes, the school's IGCSE and IB results consistently track above global averages: more than 80 per cent of IGCSE students achieved at least five A* to C grades, and in the IBDP the average score was 34 points against a 30-point global average.

Languages taught at the school include Thai, French, Spanish, German, Korean, Mandarin, and Japanese. Thai language instruction is mandatory for all students up to Year 9, as required by the Thai Ministry of Education. The school operates a First Language Programme for French, German, Japanese, and Korean students, supporting native speakers in maintaining their home-language literacy alongside the English-medium curriculum. St Andrews is also the official host of VEX Robotics competitions in Thailand. The primary campus sits at Soi Pridi Banomyong 20/1, Sukhumvit 71; the high school is at 1020 Sukhumvit Road, near Ekkamai BTS Station.

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