The Overseas School of Colombo (OSC) is a premier international school in Colombo, Sri Lanka, with a rich history dating back to 1957. As the only IB (International Baccalaureate) school in the country, OSC offers a world-class education that prepares students for success in a rapidly changing world. At OSC, we believe in providing a nurturing, supportive environment where students can develop their full potential.

Our primary years programme (PYP) promotes inquiry-based learning and a global perspective, fostering curiosity, creativity, and collaboration. The middle years programme (MYP) offers an interdisciplinary curriculum that prepares students for high school and beyond, encouraging the exploration of passions and interests. Our IB Diploma programme provides a rigorous, globally recognized curriculum that equips students with the skills and knowledge they need to succeed in college and beyond.

With experienced teachers and personalized support, OSC ensures that every student thrives. Our commitment to diversity, inclusion, and intercultural understanding sets us apart, allowing students to develop a global perspective in a multicultural world. Through experiential learning opportunities, such as service learning and community engagement, students also develop leadership skills and a sense of social responsibility.

OSC is fully accredited by the Middle States Association of Colleges and Schools (MSA), the Council of International Schools (CIS), and the International Baccalaureate Organization (IBO). These accreditations ensure that our standards meet the expectations of colleges, universities, and international schools worldwide. Join our vibrant community of global learners at The Overseas School of Colombo and experience the difference of a world-class education that prepares students for future success