SISB International School – Pracha Uthit Campus

SISB, originally the Singapore International School of Bangkok, opened in 2001 and has grown into a group of six campuses in Thailand run by SISB Public Company Limited. The Pracha Uthit campus is the flagship and the group's main boarding school. It is on Soi Ramkhamhaeng 39 (Tepleela 1) in Wang Thonglang district, northeast of central Bangkok. The group has two other full campuses for ages 2 to 18 in the Bangkok area, at Thonburi and Nonthaburi, and a Nursery-to-Primary campus at Suvarnabhumi.

Each stage uses a different curriculum. Nursery and Kindergarten follow the UK Early Years Foundation Stage, Primary uses the Singapore curriculum, and Grades 7 and 8 combine Singapore and UK content. Grades 9 and 10 lead to Cambridge IGCSE, and in Grades 11 and 12 students choose Cambridge AS and A Levels or the IB Diploma Programme. English is the main language of instruction, and all students also learn Chinese and Thai. Boarding is available for students aged 8 to 18, with separate houses and round-the-clock medical cover.

The Pracha Uthit campus has modern teaching blocks around a central lawn, a 25-metre swimming pool, playgrounds, and specialist rooms including a golf studio. For 2026–2027, annual tuition is THB 401,700 for Nursery, THB 470,700 for Primary 1 and 2, THB 567,300 for Primary 5 and 6, THB 609,300 for Grades 7 and 8 and THB 789,300 for Grades 11 and 12. Extra charges include education resources, meals and a THB 220,000 enrolment fee, which is often discounted.