Colombo International School

Colombo International School (CIS), established in 1989, is Sri Lanka's leading international school and one of South Asia's premier educational institutions. Located in Colombo 7, the city's most prestigious residential neighbourhood, CIS offers the International Baccalaureate (IB) continuum — IB Primary Years Programme (PYP), IB Middle Years Programme (MYP), and IB Diploma Programme (DP) — from Early Years through Grade 12. CIS is accredited by the International Baccalaureate Organisation and the Council of International Schools (CIS), placing it among South Asia's highest-accredited institutions. The school serves a diverse student body of over 1,000 students representing more than 50 nationalities from the diplomatic, UN, NGO, and international business community in Colombo. Outstanding facilities include science laboratories, a library, computer labs, arts studios, a swimming pool, sports courts, and a performing arts centre. CIS graduates are consistently accepted by leading universities worldwide, including Oxford, Cambridge, MIT, and Ivy League institutions. The school is the educational home for Sri Lanka's expatriate community and internationally minded Sri Lankan families.