Oakhill fields one of the strongest swim teams in NSW, with numerous students each year selected to represent the ISA, CIS, NSW and Australia. With a 25 metre indoor heated pool, Oakhill students can train in one of the best facilities in the area. Although students train year round, the inter-school competitions do not start until Term 4 and into Term 1, with the College team competing at Carnivals prior to the ISA Championships held at Sydney Olympic Aquatic Centre in early March. As one would expect, competition for selection into the College team is fierce.