The intramurals program is a fun, recreational, social, and competitive on-campus sports activity for Grayslake Community High School students. Intramurals is designed with the everyday athlete in mind and is open to all students not currently competing in-season with an interscholastic sports program. This is a great opportunity for students to have some fun and participate in organized, competitive leagues. It is easy to get involved as students form their own teams with their friends. Basketball is the sport during the winter season.