Preston, along with the first executive officer, Meredith Prime, and a small group of staff, created a program of sports and three major carnivals, track and field, swimming and diving, and cross country in three Divisions. Zoned groups of schools were established for weekly interschool competitions in netball, basketball, softball, tennis, indoor cricket, hockey, water polo, soccer, volleyball, and badminton. In addition, Saturday morning sport, which was especially attractive to boarding schools, offered golf, Australian rules football, taekwondo, and triathlon. Also organised were seasonal competitions in cricket and Surf League, and 'fun days' for students in Years 7 and 8.