The East Asia Regional Council of Overseas Schools is an organization of 115 member schools in East Asia. These schools have a total of more than 83,000 pre-K to 12th grade students. EARCOS also has 120 associate members? textbook and software publishers and distributors, universities, financial planners, architectural firms, insurance companies, youth organizations, etc? and over 26 individual members. Membership in EARCOS is open to elementary and secondary schools in East Asia which offer an educational program using English as the primary language of instruction, and to other organizations, institutions, and individuals interested in the objectives and purposes of the Council.