Founded in 2001, SISB currently has three campuses in Thailand, which adopt the Singapore and UK curricula as the foundation for teaching and learning. The SISB name is inspired by our first campus, the Singapore International School of Bangkok (2001), the first Singapore International School that was established in Thailand which pioneered the Singapore education curriculum.
Singapore International School of Bangkok was founded through the cooperative efforts of a group of Singaporean and Thai parents who were keen to invest in an institution to provide their children with quality education that develops fluency in English, Chinese and Thai. Motivated by their beliefs in the merits of the Singapore-based curriculum, they established SISB in 2001.

SISB provides a standardised curriculum underscored by the twin principles of the Singapore education system and consistently delivers high quality education that many have come to trust of SISB. Through a broad-based and unique multi-lingual curriculum, SISB offers effective learning environments, opportunities and challenges to foster students as lifelong learners and future leaders. With more than 1,500 students of over 20 nationalities, and strong teaching and support staff hailing from over 20 countries, the SISB community is inspired by a global outlook and enriched by cultural diversity. SISB upholds the reputation of the globally renowned, excellent education system of Singapore and holds the duty to contribute positively to the development of education in Thailand.

With the rapid growth of its student population, SISB identified the need to expand its campus facilities. On 7 June 2012, Her Royal Highness Princess Maha Chakri Sirindhorn presided over the Grand Opening of SISB Pracha Uthit campus, a new campus spanning 17,000 square metres in Pracha Uthit. The campus features well-equipped classrooms, a library, science and computer laboratories, a multi-purpose hall, basketball court, swimming pool, playgrounds and offers full-fledged curricula for students from age 2 to 18. 

In June 2013 SISB Suvarnabhumi campus was launched. Through major renovations of the school facilities, acquisition of new teaching resources, continuous staff training and regular dialogues with parents, SISB Suvarnabhumi has become the vibrant school that it is today.

The Singapore curriculum is known for its high standards of education and challenges our students on a daily basis. The varied After School Programme provides them with a balanced life as well. SISB Suvarnabhumi currently has 280 students and the school continues its progress in developing a holistic learning environment and unique curriculum.