Western International School Sihanoukville is a branch campus of Western International School located in Sihanoukville, Cambodia. The school delivers an American and bespoke curriculum through a progressive bilingual (Khmer–English) pathway: Early Years uses the IEYC and play-based learning, Primary uses the IPC alongside academics, and Middle and Upper Secondary use Cambridge English materials and a bilingual model built on the Cambodian national curriculum translated into English. It serves Nursery through Grade 12 (ages 3–18). English and Khmer are used as languages of instruction; the academic programme also includes Chinese lessons and Cambridge English resources. Campus facilities described on the school website include libraries and science laboratories, and the programme includes arts, sports, dance and technology as part of the timetable. Distinctive features the school cites are its staged bilingual pathway and the use of international frameworks (IEYC, IPC, Cambridge) to bridge students from early years through upper secondary.
