Sydney Boys High School participates in two swimming competitions: the GPS Invitational Carnival series and the CHS competition in the Eastern Suburbs Zone. The school's annual swimming carnival is held in early February and all boys are expected to attend. The school carnival includes as a showcase event the GPS invitational relay.

GPS Carnivals

GPS Invitational Carnivals are held on Friday nights (7pm - 9pm) in Term 1. From the selection events at these Carnivals a GPS Representative team is chosen to swim at the CIS Carnival. In 2010, six boys represented the GPS in the CIS swimming carnival: Max Chien, Darren Chien, Eugene Lee, Dominic Mah, Leonard Mah and Kazuo Nakamura.

Zone, Regional, CHS and All Schools Carnivals

The results of the school swimming carnival are used to select the GPS Team and the Eastern Suburbs Zone Team. Some swimmers then proceed to swim at the Sydney East Regional and CHS Final Carnivals. In 2010, Sydney Boys High School students Kazuo Nakamura, Leonard Mah, Shaun Pak and Max Chien were Zone Age Champions in the 12, 13, 15 and 16 years age groups respectively. Kazuo Nakamura, Leonard Mah, Darren Chien and the 6x50 Age Relay team broke Zone records. Kazuo Nakumara along with the 14 Years and 6x50 Age Relay teams won medals at the CHS Final carnival. Kazuo Nakamura and Darren Chien progressed to the NSW All Schools finals.

Swimming Highlights 2010