International sponsors twenty athletic teams that compete with other high schools throughout the San Francisco Bay Area. As of 2017-18, the school competes in the BCL Central league in team sports. Scott Kennedy joined the school as Athletic Director in 2015-16, after 16 years at Mission High School. Scott is the recipient of several leadership and coaching awards, including the California State Athletic Directors Association "Athletic Director of the Year" Award and the Positive Coaching Alliance "National Double-Goal Coach" Award. The athletic program at IHS consists of eleven different sports at the Varsity and Junior Varsity levels (including two clubs sports - sailing and skiing) and around 55 percent of the student body participates in athletics throughout the academic year. The sports are as follows: