The NSJTA fosters the development of under 18 tennis players by:-
- Providing a Friday night and Saturday morning grade based tennis competition
- Entering NSJTA teams in the Victorian Junior Pennant competition.
- Participation in annual representative events, including the Pat Pearce Cup, Wayne Arthurs Cup and Daphne Fancutt Shield.
Member clubs are located across the northern, north western and western suburbs of Melbourne, Victoria, Australia.
The competition has 2 seasons per year. Season 1 (January until June) and the Season 2 (July to December).