| ON Rank | Board Rank | City Rank | School | Board | Type | Overall Score | 2023‑24 | 2022‑23 | 2021‑22 | 3‑Year Change | Website |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 38 | 4 | 1 | École secondaire catholique Ange-Gabriel | CSDC du Centre-Est de l'Ontario | Catholic | 8.7 | 8.7 | 9.3 | 8.9 | -0.2 ↓ | Visit |
| 232 | 2 | 2 | St Mary's High School | CDSB of Eastern Ontario | Catholic | 7.4 | 7.4 | 6.9 | 6.9 | +0.5 ↑ | Visit |
| 260 | 3 | 3 | Brockville Collegiate Institute | Upper Canada DSB | Public | 7.3 | 7.3 | 7.2 | 7.6 | -0.3 ↓ | Visit |
| 517 | 12 | 4 | Thousand Islands Secondary School | Upper Canada DSB | Public | 6.2 | 6.2 | 5.8 | 5.4 | +0.8 ↑ | Visit |