Founded in 1964 in Bandar Seri Begawan, Brunei, International School Brunei (ISB) joined FOBISIA in 2002 or earlier (no prior data available). . 

The school follows a British type curriculum, and offers the International General Certificate of Secondary Education (IGCSE) and the International Baccalaureate Diploma Programme (IBDP). 

International School Brunei is accredited by an approved inspectorate.