The most prominent sports contested include rugby union,[1][2] cricket and football, as well as swimming and track and field.

The colleges with the strongest athletic programs in the TAS competition's top division moved to form the AIC.

[3] After the AIC was founded, only one all-boys school remained in TAS, the now defunct Marist Brothers College Rosalie.

Starting in 2022, Ambrose Treacy College, Indooroopilly was invited to become a guest member for a two-year time span.

[6][7] An invitational golf day is also held in Term 4, with the annual Gordon Balharry Shield awarded to the AIC school with the best team score on an adjusted handicap basis.

[8] Rugby league and Australian rules football competitions were introduced on a two-year opt-in trial basis for 2019.

[9] Ashgrove, Iona and St Laurence's have traditionally been prominent in the rugby competitions, although Padua has enjoyed recent success.

The sporting calendar for the AIC is split into terms: The championships for swimming, cross country, track and field athletics and golf are held on a single day.

[34] List of Open team winners since 2011: Water polo is played as a social competition on an opt-in basis by AIC schools.