Aster International School Bangkok
(โรงเรียนนานาชาติแอสเตอร์ กรุงเทพ)
1st-Year Total
฿447K–฿769K
All-in estimate
Curriculum
British
A-Levels, high-school-diploma...
Level of Education
2–18 yo
Nursery → High School
Language of Instruction
English
+ 3 more languages
Students
550
Across all ages
Aster is one of Bangkok's newer international schools, founded in 2022, and it has been built around a deliberate idea: an enhanced British curriculum where project-based learning and real-world problem solving sit alongside the English National Curriculum, rather than beneath it.
Children from age 2 to 18, on a purpose-built campus in Yan Nawa, following British EYFS and the National Curriculum through primary and lower secondary, then Cambridge IGCSE and A-Levels at senior level, with a high school diploma pathway available alongside.
Language pathways include Mandarin, French, and Thai. The campus is on Naradhiwas Rajanagarindra Road Soi 24 in Chong Nonsi, within easy reach of Chong Nonsi BTS and well placed for families in Sathorn, Silom, Riverside, and Rama III.
Fees run from roughly 247,731 to 509,356 THB annually, making this one of the most accessibly priced full British pathway schools in a central Bangkok location. The school is still in its early years and building its senior cohorts toward full capacity. For families who want a central location, an enhanced British curriculum, and fees that sit well below the premium schools in the same area, Aster is a school worth visiting sooner rather than later.
1st Year Tuition Fees (2025–2026)The school hasn't published 2026–2027 fees yet. We're displaying 2025–2026 rates as a reference; these may be updated once the new figures are released.
Estimated cost for any age group entering this school
Tuition fees (2025–2026)
What You Should Actually Know About Aster International School Bangkok
Aster International School Bangkok sits in a distinctive corner of the market: a young British school on the Naradhiwas corridor, built for families who want a full age 2 to 18 pathway without heading out to a large suburban campus.
The school opened in August 2022 and runs from a single purpose-built site in central Bangkok. Academically, it starts with EYFS in the foundation stage, moves into an enhanced version of the English National Curriculum, and then shifts into Cambridge IGCSE and A-Levels in upper secondary. The public curriculum pages also note a separate high school diploma pathway in the senior years. That combination says quite a lot about the school's shape in practice. It is trying to offer a conventional British exam route, but with some flexibility built in, and its published language offer, Enhanced Thai plus specialist Chinese and French, gives it a more local Bangkok feel than a generic British copy.
The day-to-day picture is clearer once you look at how teaching is described. Foundation is play-based, while primary and lower secondary are delivered through project-based work across subjects. Specialist lessons are built into the timetable for music, PE, languages, and Enhanced Thai.
A school-verified public profile lists an average class size of 15 and a maximum of 22, which fits the school's smaller-scale feel. The facilities are useful rather than excessive: sixth form suite, technology lab, auditorium, library, indoor play zone, outdoor gardens and playground, plus sports and swimming spaces. Aster also publishes school van provision, food service with halal and vegetarian accommodation, university counselling, and public evidence of both EAL and learning support provision.
For families already orbiting Sathorn, Silom, Rama 3, or Naradhiwas, that central location is a practical advantage. The main self-selection point is straightforward. This is not a school trading on decades of institutional memory; it is still building traditions, alumni networks, and a longer public record of senior outcomes. Families considering the older year groups need to be comfortable with that. Equally, the urban site means convenient city access, but not the broad outdoor footprint some Bangkok schools use for sport. Public rail access is indirect, so many families will rely on the van service or a car journey rather than a short walk from a BTS station.
In return, you get a full British route in central Bangkok, a newer campus, and a school that already publishes clear structures around Thai provision, language study, and senior guidance. Best for families who want a city-based British school and are comfortable choosing a newer institution on the strength of its pathway and day-to-day setup rather than its age.