kˈænbɚɹə ɡˈɜːlz ɡɹˈæmɚ skˈuːl ɪz ɐfˈɪlɪˌeɪɾᵻd wɪððɪ ɐlˈaɪəns ʌv ɡˈɜːlz skˈuːlz ˌɔːstɹɐlˈeɪʒə ˈæɡsə, ðɪ ɐsˈoʊsɪˌeɪɾᵻd sˈʌðɚn kˈɑːlɪdʒᵻz ˌeɪˌɛssˈiː, ðɪ ɐsˌoʊsɪˈeɪʃən ʌv hˈɛdz ʌv ˌɪndᵻpˈɛndənt skˈuːlz ʌv ɔːstɹˈeɪliə ˈæhɪsə, ðɪ ɔːstɹˈeɪliən bˈoːɹdɪŋ skˈuːlz ɐsˌoʊsɪˈeɪʃən ɐbsˈæ, ænd ɪz ɐ mˈɛmbɚɹ ʌvðɪ ɐsˌoʊsɪˈeɪʃən ʌv hˈɛdz ʌv ˌɪndᵻpˈɛndənt ɡˈɜːlz skˈuːlz ˈæhɪɡz.
Canberra Girls Grammar School is affiliated with the Alliance of Girls Schools Australasia (AGSA), the Associated Southern Colleges (ASC), the Association of Heads of Independent Schools of Australia (AHISA), the Australian Boarding Schools' Association (ABSA), and is a member of the Association of Heads of Independent Girls' Schools (AHIGS).