| Ontario Rank | Board Rank | School | City | Type | Overall Score | 2023‑24 | 2022‑23 | 2021‑22 | 3‑Year Change | Website |
|---|---|---|---|---|---|---|---|---|---|---|
| 208 | 1 | St Michael High School | Kemptville | Catholic | 7.5 | 7.5 | 7.5 | 6.7 | +0.8 ↑ | Visit |
| 232 | 2 | St Mary's High School | Brockville | Catholic | 7.4 | 7.4 | 6.9 | 6.9 | +0.5 ↑ | Visit |
| 368 | 3 | St. Thomas Aquinas Catholic High School | Russell | Catholic | 6.8 | 6.8 | 6.8 | 6.0 | +0.8 ↑ | Visit |
| 370 | 4 | St John Catholic High School | Perth Road | Catholic | 6.8 | 6.8 | 5.9 | 5.9 | +0.9 ↑ | Visit |
| 386 | 5 | Notre Dame Catholic High School | Carleton Place | Catholic | 6.7 | 6.7 | 6.9 | 6.5 | +0.2 ↑ | Visit |
| 415 | 6 | St Joseph's Secondary School | Cornwall | Catholic | 6.6 | 6.6 | 5.9 | 5.5 | +1.1 ↑ | Visit |
| 578 | 7 | St Francis Xavier Catholic High School | Hammond | Catholic | 5.8 | 5.8 | 6.2 | 5.9 | -0.1 ↓ | Visit |
| 662 | 8 | Holy Trinity Catholic Secondary School | South Glengarry | Catholic | 5.2 | 5.2 | 5.9 | 6.2 | -1.0 ↓ | Visit |
| 753 | 9 | St. Luke Catholic High School | Smiths Falls | Catholic | 3.5 | 3.5 | 2.0 | 3.5 | 0.0 → | Visit |
| 769 | 10 | St Matthew Catholic Secondary School | Cornwall | Catholic | 1.6 | 1.6 | 2.3 | 2.1 | -0.5 ↓ | Visit |
| 788 | 11 | St. James Catholic Education Centre High School | Smiths Falls | Catholic | — | — | — | — | — | Visit |