Julian competes in the Chicago Public League (CPL) and is a member of the Illinois High School Association (IHSA). The school sport teams are nicknamed the Jaguars. The boys' wrestling team became public league champions and Class AA two times (1981–82, 1986–87). The girls' basketball team became regional champions during the 2003–04 season. The boys' basketball team were regional champions and Class AA three times (2002–03, 2003–04, 2004–05).
