As a member of the
Associated Catholic Colleges, interschool competition is offered to year 7–12 students in: • Athletics • Australian Rules Football • Basketball • Chess • Cricket • Cross country running • Golf • Swimming • Hockey • Soccer • Table tennis • Tennis • Volleyball ACC matches are timetabled into the school week. Students are also involved in state and national level competitions in athletics, snow sports and weightlifting.
ACC premierships De La Salle has won the following ACC premierships. • Athletics (26) – 1944, 1945, 1946, 1947, 1963, 1964, 1965, 1967, 1973, 1978, 1979, 1980, 1981, 1982, 1984, 1985, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2016 • Basketball (2) – 1992, 2008 • Cricket (20) – 1932, 1934, 1939, 1945, 1951, 1954, 1956, 1957, 1959, 1973, 1975, 1989, 1990, 1992, 1993, 2010, 2011, 2014, 2016, 2017 • Cross Country (7) – 1993, 1994, 2000, 2001, 2002, 2003, 2004, 2013 • Football (18) – 1935, 1936, 1939, 1941, 1942, 1943, 1944, 1945, 1947, 1958, 1960, 1977, 1987, 1989, 1990, 2002, 2003, 2008 • Golf (5) – 2010, 2011, 2013, 2017, 2019 • Handball (2) – 1942, 1948 • Hockey (2) – 1998, 2019 • Soccer – 1984, 2011 • Swimming (20) – 1942, 1943, 1952, 1953, 1956, 1957, 1958, 1974, 1975, 1976, 1978, 1979, 1980, 1981, 1982, 1983, 1993, 1996, 2018, 2019 • Tennis (13) – 1934, 1935, 1944, 1948, 1949, 1951, 1954, 1985, 1986, 1987, 1988, 1989, 2000 ==Mission Action Day==