in 1990 the school received further accreditations from ecis (european council of international schools) and msa (middle states association of colleges & schools) and over the next five years opened a 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 performing arts facility in 2005, renovated its primary and secondary libraries, and inaugurated a new sports facility in 2009.