 The school was the first permanent home of the Sisters of Mercy in Queensland, and is the oldest surviving secondary school in Brisbane.All Hallows' is a member of the Association of Heads of Independent Schools of Australia (AHISA), the Alliance of Girls' Schools Australia, the Australasian Mercy Secondary Schools Association, and the Catholic Secondary Schoolgirls' Sports Association.The school's motto is in French, "Dieu et Devoir" (English