It is located in Fairwater and serves the surrounding area in the west of Cardiff, Wales.

Although in the past it has often struggled,[4][5][6] it has progressed significantly in recent years,[7] and performed well in its most recent Estyn inspections, earning the title Cardiff's most improved school in Wales Online.

[9] The original building became the Chapter Arts Centre in 1971.

[11] Cardiff Council is planning to completely rebuild Cantonian High School, to expand the Sixth Form capacity, and to provide a Specialist Resource Base for people with ASD.

This United Kingdom school or sixth form college related article is a stub.