 The college is a member of the Sports Association of Tasmanian Independent Schools.MacKillop Catholic College was part of a restructuring of Catholic education in the Archdiocese of Hobart during the early 1990s, although moves to establish a Catholic secondary school on the eastern shore of Hobart had begun in the 1960s.During 1993 the Catholic Church purchased the site and buildings of Mornington Primary School, which had ceased operation as a state primary school at the end of 1992.