| 6 | 1 | St Robert Catholic High School | Thornhill | Catholic | 9.5 | 9.5 | 9.4 | 9.1 | +0.4 ↑ | Visit |
| 7 | 2 | St Augustine Catholic High School | Markham | Catholic | 9.4 | 9.4 | 9.2 | 9.1 | +0.3 ↑ | Visit |
| 8 | 3 | St Theresa of Lisieux Catholic High School | Richmond Hill | Catholic | 9.4 | 9.4 | 9.5 | 9.1 | +0.3 ↑ | Visit |
| 53 | 4 | Father Michael McGivney Catholic High School | Markham | Catholic | 8.5 | 8.5 | 8.4 | 8.3 | +0.2 ↑ | Visit |
| 80 | 5 | St Brother André Catholic High School | Markham | Catholic | 8.2 | 8.2 | 8.2 | 7.3 | +0.9 ↑ | Visit |
| 105 | 6 | Our Lady Queen of the World CA High School | Richmond Hill | Catholic | 8.1 | 8.1 | 8.1 | 7.4 | +0.7 ↑ | Visit |
| 118 | 7 | Father Bressani Catholic High School | Woodbridge | Catholic | 8.0 | 8.0 | 7.2 | 6.6 | +1.4 ↑ | Visit |
| 128 | 8 | Cardinal Carter Catholic Secondary School | Aurora | Catholic | 7.9 | 7.9 | 7.7 | 7.5 | +0.4 ↑ | Visit |
| 206 | 9 | St Elizabeth Catholic High School | Thornhill | Catholic | 7.5 | 7.5 | 7.7 | 6.4 | +1.1 ↑ | Visit |
| 231 | 10 | St Maximilian Kolbe High School | Aurora | Catholic | 7.4 | 7.4 | 7.2 | 6.2 | +1.2 ↑ | Visit |
| 249 | 11 | Sacred Heart Catholic High School | Newmarket | Catholic | 7.3 | 7.3 | 7.1 | 6.6 | +0.7 ↑ | Visit |
| 369 | 12 | Our Lady of the Lake Catholic Academy High School | Keswick | Catholic | 6.8 | 6.8 | 6.1 | 8.0 | -1.2 ↓ | Visit |
| 384 | 13 | Holy Cross Catholic Academy High School | Woodbridge | Catholic | 6.7 | 6.7 | 6.6 | 5.8 | +0.9 ↑ | Visit |
| 413 | 14 | St Jean de Brebeuf Catholic High School | Woodbridge | Catholic | 6.6 | 6.6 | 6.9 | 5.8 | +0.8 ↑ | Visit |
| 437 | 15 | St Joan of Arc Catholic High School | Maple | Catholic | 6.5 | 6.5 | 6.2 | 5.3 | +1.2 ↑ | Visit |
| 773 | 16 | St Luke Learning Centre | Maple | Catholic | 0.9 | 0.9 | — | — | — | Visit |