St. John offers several seasonal, inter-scholastic sports for students in grades 5-8. All students must maintain a "C" average to remain eligible for participation in athletic activities.
- Soccer (1 team, boys and girls on same team)
- Volleyball (2 teams, 5th/6th Grade Girls and 7th/8th Grade Girls)
- Basketball (4 teams: 5th/6th Grade Boys, 7th/8th Grade Boys, 5th/6th Grade Girls and 7th/8th Grade Girls)
- Cheerleading for Basketball (5th/6th Grade - no tryouts and 7th/8th Grade - tryouts)