St Mary Mackillop College is a co-educational Catholic school for Years K to 12, located in Busselton, Western Australia.
In 2014, under the direction of the Catholic Education Commission of WA and the Bishop of Bunbury, the primary school St Joseph’s School (founded 1922) and the secondary school MacKillop Catholic College (founded 1994) began the process of amalgamation to create a co-educational K-12 Catholic College.
St Mary MacKillop College opened in 2016, with over 1200 students.