Concordian International School was founded in August 2001 and is a Pre-K to Grade 12 IB World School located in Bangkok (Bangna area). Concordian is educating 1,000 students within the International Baccalaureate (IB) Organization programs. It is the only fully trilingual international school in Thailand using the International Baccalaureate (IB) program with English, Chinese, and Thai as the main languages of instructions. In the Early Years and Primary Years programs, students learn in a English-Chinese Immersion Program, once they move to Grade 5 and up, English becomes the main medium of instructions. Concordian International School is a private international school fully accredited by the International Baccalaureate Organization (IB) (PYP/MYP/DP), the New England Association of Schools and Colleges (NEASC) and the Council of International Schools (CIS). It is also a member of the International Schools Association of Thailand (ISAT) and the East Asia Regional Council of Schools (EARCOS)