| Ontario Rank | Board Rank | School | City | Type | Overall Score | 2023‑24 | 2022‑23 | 2021‑22 | 3‑Year Change | Website |
|---|---|---|---|---|---|---|---|---|---|---|
| 222 | 1 | Northern Collegiate Institute and Vocational School | Sarnia | Public | 7.5 | 7.5 | 6.6 | 7.1 | +0.4 ↑ | Visit |
| 237 | 2 | Lambton Central Collegiate and Vocational Institute | Petrolia | Public | 7.4 | 7.4 | 6.5 | 6.0 | +1.4 ↑ | Visit |
| 505 | 3 | North Lambton Secondary School | Forest | Public | 6.2 | 6.2 | 5.8 | 5.0 | +1.2 ↑ | Visit |
| 542 | 4 | Blenheim District High School | Blenheim | Public | 6.0 | 6.0 | 6.0 | 6.2 | -0.2 ↓ | Visit |
| 546 | 5 | Lambton Kent Composite School | Dresden | Public | 6.0 | 6.0 | 4.7 | 6.4 | -0.4 ↓ | Visit |
| 598 | 6 | Great Lakes Secondary School | Sarnia | Public | 5.7 | 5.7 | 4.9 | 4.5 | +1.2 ↑ | Visit |
| 620 | 7 | Chatham-Kent Secondary School | Chatham | Public | 5.6 | 5.6 | 5.2 | 5.8 | -0.2 ↓ | Visit |
| 624 | 8 | Wallaceburg District Secondary School | Wallaceburg | Public | 5.6 | 5.6 | 5.5 | 5.3 | +0.3 ↑ | Visit |
| 681 | 9 | John McGregor Secondary School | Chatham | Public | 5.0 | 5.0 | 4.7 | 4.5 | +0.5 ↑ | Visit |
| 701 | 10 | Tilbury District High School | Tilbury | Public | 4.9 | 4.9 | 5.4 | 5.5 | -0.6 ↓ | Visit |
| 747 | 11 | Ridgetown District High School | Ridgetown | Public | 3.9 | 3.9 | 4.5 | 4.4 | -0.5 ↓ | Visit |
| 754 | 12 | Alexander Mackenzie Secondary School | Sarnia | Public | 3.5 | — | 3.5 | 1.5 | +2.0 ↑ | Visit |