CCEGGS was nearly closed down during the Great Depression, and sold some of its land in order to remain solvent. A boom period in the 1970s saw the school expand, with the Junior School moving to a new Campus in Grey Street, Deakin, to cater for a surge in enrolments. Today the junior school remains on a separate campus within the suburb. In 2001, the school name changed again, this time to its current form Canberra Girls Grammar School (CGGS). In 2004, CGGS opened an Early Learning Centre (preschool) catering for 3- to 5-year-olds on its Junior School campus.
