St Luke's Grammar School is a dual campus independent Anglican co-educational primary and secondary day school, located on the Northern Beaches of Sydney, New South Wales, Australia. The school was founded in 1993 as the amalgamation of Roseby Preparatory School, Peninsula Grammar School and St Luke's Anglican School for Girls. Geoff Lancaster is the 3rd Principal of St Luke's Grammar School, following on from Jann Robinson (2005 - 2020) and John Scott (1993 - 2004). Overview On the Northern Beaches of Sydney, the school has approximately 1,100 students from Pre-K to Year 12. St Luke's Grammar School's main Senior School campus is located in . It also has a second junior school campus in Bayview, which succeeds the former Loquat Valley Anglican Preparatory School. The school 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. History St 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 High) 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 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. The School was expanded by the introduction of a second Kindergarten class in 1995 and a third Year 7 in 1996. As a result of Scott's Study Leave to the UK and USA in 1997, St Luke's Middle School commenced in 1999. This lay the foundation for a fully double streamed Junior School and a fully triple streamed Senior School by 2001. The school site has seen extensive building work over the years. In February 1997 the multi-purpose hall was officially opened by the Archbishop of Sydney. In 1998 work commenced on the St Luke's Junior Centre, accommodating classrooms for Cottage, Kindergarten and Year 1