Colombo International School was founded in 1982, in response to the growing demand for co-educational, English-medium, high quality education in Colombo. From its inception, CIS has been located in Gregory's Road, Colombo 7 (formally known as Cinnamon Gardens), which is one of the most desirable, safe, attractive and quiet residential locations in the city. In 1998 the school opened CIS Kandy.

CIS is justifiably proud of its academic record, with alumni currently studying at many of the world’s most prestigious universities, including Oxford, Cambridge, Imperial College, London School of Economics, Harvard, Monash, Princeton, Stanford, and the University of Melbourne.


  • Multi-Media Based Classroom Facilities.
  • Hi-tech Library.
  • Electronic Reference Library.
  • The Virtual Museum.
  • The Education Information and Research Coordination Unit (EIRCU).
  • State-of-the-art computer labs and multi-media facilities with internet access.
  • Science Laboratories.
  • Fully air-conditioned Auditorium.
  • 25-meter 6 lane swimming pool.
  • World class sports facility.