| Blessed Trinity Catholic Secondary School |
Grade 9 to 12 |
Grimsby |
| Denis Morris Catholic High School |
Grade 9 to 12 |
St. Catharines |
| Holy Cross Catholic Secondary School |
Grade 9 to 12 |
St. Catharines |
| Lakeshore Catholic High School |
Grade 9 to 12 |
Port Colborne |
| Notre Dame College School |
Grade 9 to 12 |
Welland |
| Saint Francis Catholic Secondary School |
Grade 9 to 12 |
St. Catharines |
| Saint Michael Catholic High School |
Grade 9 to 12 |
Niagara Falls |
| Saint Paul Catholic High School |
Grade 9 to 12 |
Niagara Falls |