St Luke's Grammar School is an Anglican, Co-Educational School from Pre-Kindergarten through to Year 12 located on Sydney's Northern Beaches. The Junior School has approximately 400 girls and boys from Pre-Kindergarten to Year 6. The Senior School (Years 7 - 12) campus has approximately 550 girls and boys.The Vision of St Luke's is "Equipping students to make a difference in the world".St Luke's is affiliated with the Heads of Independent Co-Educational Schools (HICES), the New Anglican Schools' Sports' Association (NASSA), the Association of Heads of Independent Schools of Australia (AHISA), the Junior School Heads Association of Australia (JSHAA), the Independent Primary School Heads of Australia (IPSHAA), the Association of Independent Co-Educational Schools (AICES) and the Association of Independent Schools of NSW.HistorySt Luke's Grammar School began in February 1993, following the amalgamation of three Sydney Anglican Schools Corporation schools on Sydney's Northern Beaches: Roseby Preparatory (Junior) School, Peninsula Grammar (Boys) School and St Luke's Anglican College for Girls.The new K-12 co-educational school opened with 43 staff and 488 students, under the principalship of Mr John Scott. During the first year, the School started its first Cottage (Preschool) class with 11 children, located in a house adjacent to the School. By the following year, the first Master Plan was unveiled, which involved the building of a multi-purpose hall as well as a new administration building and Technological and Applied Studies block.