| Ontario Rank | Board Rank | School | Board | City | Type | Overall Score | 2023‑24 | 2022‑23 | 2021‑22 | 3‑Year Change | Website |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 766 | 5 | Williamstown Public School | Upper Canada DSB | Williamstown | Public | 7.9 | 7.9 | 6.5 | 6.7 | +1.2 ↑ | Visit |
| 1894 | 11 | Iona Academy | CDSB of Eastern Ontario | Williamstown | Catholic | 6.8 | 6.8 | 8.1 | 8.2 | -1.4 ↓ | Visit |
| 3797 | 66 | Char-Lan Intermediate School | Upper Canada DSB | Williamstown | Public | — | — | — | — | — | Visit |