 Ivanhoe Grammar School has an Australian Army Cadets (AAC) unit that is one of the largest in the state.Founded in 1961, the unit is known as Ivanhoe Grammar School Cadet Unit (IGSCU).The School participates in the Associated Grammar Schools of Victoria's sporting fixture, where it has been the competitions powerhouse in the sports of Athletics and Swimming where it has, since 1988 won 14 and 13 Premierships respectively.