ACG Sunderland provides education to boys and girls from Years 1 to 13,[6] as well as a preschool.

[7] The student body is split into six houses, named after four founders of the school and two places in Auckland: Waitakere, Whenuapai, Tong, Fleming, Findlay, and McDonald.

[9] The CIE curriculum has students sit external Cambridge examinations during the October-November months of each year.

[10] In May, the school's College (Years 7 to 13) sit Mid-Year internal examinations, with Upper College students (Years 11 to 13) sitting Mock Exams in August to prepare for the external examinations.

ACG Sunderland's campus comprises architecturally designed premises and nine acres of landscaped grounds.