In 1987, All Saints Catholic Senior High School, was established by the Roman Catholic Archdiocese of Sydney and classes began in temporary demountable classrooms on 2 February 1987 on the site of St Mary's High and Patrician Brothers' High, Liverpool. Following a rapid ten-week construction, the current Leacocks Lane campus was opened in 1988 with 380 students and 29 teaching staff. The College was officially blessed on Sunday 27 March 1988 by Archbishop Edward Clancy after which permanent building construction began.