The Overseas School of Colombo (OSC) strives to be a model of excellence delivering an academically rigorous, yet holistic education enhanced by rich co-curricular activities. The โOSC experienceโ provides an abundance of service-learning activities and projects in support of our vision and mission. Our small class sizes allow for personalised attention and positive teacher-student relationships d
raw students into the process of learning and promote their desire to learn. With more than 40 nationalities across our school, we are an international family that lives and breathes our motto every day โ โ๐๐ฏ๐ช๐ต๐บ ๐ช๐ฏ ๐๐ช๐ท๐ฆ๐ณ๐ด๐ช๐ต๐บโ. We build intercultural awareness, fluency and collaboration skills through our curriculum units and project design. The experiential learning opportunities we offer our students instill responsibility, empathy, and sustainable practices in our co-shared fragile world. To us, teaching is much more than just covering the curriculum objectives, it is shaping a human being to be a contributing citizen โ a responsibility we hold dear.
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The Overseas School of Colombo (OSC) is dually accredited by the Middle States Association of Colleges and Schools (MSA) and the Council of International Schools (CIS), and authorised by the International Baccalaureate (IB). Our triple accreditation process is rigorous and based on top-notch standards of international schools. The standards cover critical areas of governance, finance, staffing qualifications, academic programme and results, pedagogical practices, student life, health & safety, operations, facilities, and more. We are the only 3-programme continuum ๐๐ ๐๐ฐ๐ณ๐ญ๐ฅ ๐๐ค๐ฉ๐ฐ๐ฐ๐ญ in Sri Lanka authorised to offer all three programmes โ PYP, MYP, and DP. We have full membership status with the Near-East and South Asia (NESA) Association of International Schools, the Educational Collaborative for International Schools (ECIS), the Association for the Advancement of International Education (AAIE), the Principalโs Training Centre (PTC), and are also part of the South Asian Inter-Scholastic Association (SAISA).
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The Overseas School of Colombo shall be a model of excellence in education, nurturing and empowering our community of learners to achieve global success.
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The Overseas School of Colombo, an IB World School, is committed to guiding our global community toward international and intercultural understanding. OSC develops the whole person as a responsible learner, striving for personal excellence within a culturally diverse environment.
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Founded on 23rd September 1957, The Overseas School of Colombo (OSC) is Sri Lankaโs oldest internationally accredited educational institution. Originally, named the Colombo School for Overseas Children, it was located at Queenโs Street in Colombo Fort. The founders were from diplomatic missions (British, Burmese, and the Dutch High Commissions) and the business community. In September 1961, the school leased the premises known as โRippleworthโ at Turret Road (Dharmapala Mawatha) in Colombo 3. In August 1963, the school in Fort had 100 children, while the Upper School at Rippleworth, had about 72 children. In 1967, the school gained accreditation by the International Schools Association in Geneva, Switzerland. In 1971, the school relocated to 51 Muttiah Road in Colombo 2 (Rivington) until finally in 1983 the school was relocated to its present address in Pelawatte, Battaramulla. During the same year, the school obtained accreditation by the International Baccalaureate (IB) Organisation as an IB World School, capable of offering the IB Diploma Programme. In 1982, the school changed its name to Overseas Childrenโs School (OCS). In 1990, the school received further accreditations from ECIS (European Council of International Schools) and MSA (Middle States Association of Colleges and Schools) and over the next five years opened its gymnasium and swimming pool. As the school developed it became recognised as an Office of Overseas sponsored school and has built close ties with the US Embassy while maintaining links with the other diplomatic missions. In 1996, the school took its present name, The Overseas School of Colombo. Continuing its campus development programme, the school built a new performing arts facility in 2005, renovated its primary and secondary libraries, and inaugurated a new sports facility in 2009. At present, OSC is the only school in Sri Lanka to offer the International Baccalaureate programme from Pre-school to Grade 12. OSC is a multinational, English-medium international school catering to the needs of the internationally mobile expatriate community and Sri Lankan students. At OSC, we provide an educational setting that is focused on developing each student to achieve their full potential. That degree of personal excellence can only come with highly qualified teachers committed to the needs of all students on a campus which balances nature with state-of-the-art technology, facilities, and resources. OSC is a culturally diverse community with students, parents, and staff working in harmony.
