| Grades | Season | Registration | |
| Basketball | 9 thru 12 | Dec thru Mar | Oct/Nov |
| Coed Volleyball | 9 thru 12 | Apr thru Jun | Feb/Mar |
High School Eligibility Rules
Participants must meet one of the following criteria:
- be registered in St. Alphonsus Parish;
- be a member of another neighboring parish that does NOT have a CYO Program (or a particular sport) that IS offered by St. Alphonsus CYO