Concordian International School is a Pre-K to Grade 12 school located in Bangkaew, Bangkok, Thailand. The school educates 1,100 students within the International Baccalaureate Organization programs. It is the only fully trilingual international school in Thailand using the International Baccalaureate program offering full immersion in English, Chinese, and Thai. Concordian International School is a private school and is a member of the International Schools Association of Thailand (ISAT) and the East Asia Regional Council of Schools (EARCOS). It is also fully accredited by the International Baccalaureate Organization, the New England Association of Schools and Colleges (NEASC), and the Council of International Schools (CIS).