The Association of Coeducational Schools (ACS) was formed in 1997 and commenced midweek sporting competitions for Years 7–12 in 1998 with five founding member schools that are coeducational and shared similar philosophies and a commitment to sport.
Sport for all year levels is played during the week.
Sports offered include: mixed badminton, basketball, cricket, Australian Rules football, football (soccer), futsal, hockey, mixed lawn bowls, netball, softball, table tennis, tennis, mixed touch football and volleyball.
The ACS offers three major championships; athletics, swimming and cross country.
The annual chess tournament and public speaking events are also part of the ACS calendar.