It is also a member of East Asia Regional Council of Schools (EARCOS), The Principals’ Training Centre (PTC) and Overseas Association for College Admission Counselling (OACAC).

In 1998, Chatsworth moved to a centrally located campus off Orchard Road, the original home of the Singapore Chinese Girls’ School, which is designated as a heritage site.

In August 2018, Chatsworth International School opened a permanent campus at Bukit Timah,[3] catering to students from Kindergarten to Year 13.

Chatsworth International School is located next to Bukit Timah Nature Reserve.

In addition to team-based sports, these include arts, leadership, clubs and special interests.