In 2007 St Mary's College introduced the Netball Specialist Program to foster excellence and elite skills in talent young netballers. This program has been conducted in after school hours and has now expanded into a netball curriculum within the College. In 2012. St Mary's College was recognised as one of 7 Specialist Netball Schools in SA and continues to be endorsed by Netball SA.
The Netball Program is open to students who demonstrate talent and potential in netball and is available as an elective subject in Year 9 & 10. Year 11 and 12 students currently complete the components outside school hours. Students who display advanced netball skills, from Years 6 - 10 are invited to train as part of a Netball Development Squad and represent St Mary's College in the State Knockout Netball Competition, Wednesday afternoon Southern Zone Competitions and in a National Carnival held in Brisbane each July.
Students who are selected as members of the Specialist Netball Program will complete the majority of the requirements of the program within their PE lessons. Although they may participate in other activities within this time, the core of their PE lessons will be Netball based.