The Overseas School of Colombo

The Overseas School of Colombo (OSC) is Sri Lanka's most prestigious and long-established international school, founded in 1957. Located in Pelawatte, Battaramulla, a suburb of Colombo, OSC is the only school in Sri Lanka that offers all three main International Baccalaureate programmes—the IB Primary Years Programme (PYP), IB Middle Years Programme (MYP), and IB Diploma Programme (DP). The school serves students from Pre-Kindergarten through Grade 12. OSC is fully accredited by the New England Association of Schools and Colleges (NEASC) and the Council of International Schools (CIS), reflecting its commitment to the highest international educational standards. With students representing over 50 nationalities, OSC provides a truly multicultural learning environment. The school is governed by an independent Board of Directors and operates as a nonprofit institution. OSC's beautiful Pelawatte campus offers modern academic facilities, a library, science and arts rooms, sports facilities, and a swimming pool. OSC alumni have gained acceptance to leading universities globally.