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Sri Lanka, Colombo
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OSC does not have a school uniform. A dress code applies on campus and for activities, and students should dress modestly and respectfully of the diverse cultures represented. A PE uniform is required: house T-shirt in red, blue, green or yellow, black OSC shorts and appropriate shoes; swimming attire must be a one‑piece swimsuit for girls, shorts above knee length for boys, and swim caps.
There is a cafeteria on campus operated by a private catering company. Students can purchase drinks, fruit, sandwiches, snacks, and a main dish at lunch; they may bring a packed lunch or purchase lunch in the cafeteria; lunches are eaten in the canteen under staff supervision; a canteen app allows loading money onto a student's account.
OSC uses a house system. PE uses house T-shirts in red, blue, green or yellow, worn for related activities; house T-shirts and OSС clothing can be obtained from the school shop.
OSC is registered as a guarantee company and operates as a non‑profit independent school; revenues beyond expenses are reinvested to improve education. The board consists of nine directors elected from full‑fee‑paying parents, and the Head of School is a non‑voting member of the board.
Founded more than 65 years ago, the Overseas School of Colombo is a non-profit, co-educational English-medium day school serving ages 3 to 18. It offers the International Baccalaureate continuum—PYP for Early Years to Grade 5, MYP for Grades 6–10, and the Diploma Programme for Grades 11–12—with self-taught mother-tongue support and online Pamoja options. OSC is the only IB World School in Sri Lanka. The school's motto, Unity in Diversity, guides a holistic, inquiry-based approach; the curriculum emphasizes international-mindedness, learner ownership, and, in the DP, Theory of Knowledge, the Extended Essay and CAS. The five-acre, green campus houses six buildings, four science labs, three design labs, two libraries with over 25,000 volumes, and extensive arts and IT facilities, plus a 25-metre pool, gym, auditorium, and multiple playing fields. A broad after-school program includes AMC Math Club, Linguistic Adventures, COMUN, and SAISA, with service learning through CAS and Week Without Walls.
