In addition to the academic, community and social activities offered at St. Joseph, the school also has a diverse range of athletic opportunities. These programs are designed to provide all students with the chance to learn, enjoy and participate in a number of competitive sports. Student athletes learn the importance of hard work, good sportsmanship and fair play while developing their physical and mental skills. Emphasis is placed on the importance of discipline, teamwork, cooperation and competitive fun. St. Joseph School Wilmette participates in the Catholic School League in Council II-3A. Teams include cross-country, track, basketball, football, and volleyball.
St. Joseph also offers a Saturday morning basketball program for K-3rd.