Founded in 1973, Seoul International School was the first foreign school, after Korean Liberation in 1945. From that beginning, SIS has grown and expanded to provide excellent opportunities in education for the growing and changing expatriate community. The Western Association of School and Colleges (WASC) accredited Seoul International School for a six-year term in 1979. Subsequent accreditation were proudly received in 1985, 1991, 1997 and the spring of 2003.