The new school will combine Arthur Phillip High School and Parramatta Public School into a new 17-storey building.
The school will cater for up to 2,000 secondary students and 1,000 primary students, and will be based on a schools-within-schools model, where the school is broken into smaller 'stages'.
The $100m redevelopment is a response to Parramatta's increased urban density, and shows how large schools can be accommodated on a relatively small piece of land.
The primary school will be housed in a four-storey gradually curving building, that surrounds an outdoor learning and play area. The high-school will be 17-stories, and will consist of a series of two-storey, stacked volumes.
Design entries were submitted from around the world, and included some of the world's best architects, including Lyons, Architectus, and Woods Bagot/3XN.
The school is scheduled to open in 2019.
Neil Perry heads to Parramatta