| Ontario Rank | Board Rank | School | Board | City | Type | Overall Score | 2023‑24 | 2022‑23 | 2021‑22 | 3‑Year Change | Website |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 682 | 2 | Marathon High School | Superior-Greenstone DSB | Marathon | Public | 5.0 | 5.0 | 5.0 | 6.6 | -1.6 ↓ | Visit |
| 858 | 6 | École secondaire Cité-Supérieure | CS public du Grand Nord de l'Ontario | Marathon | Public | — | — | — | — | — | Visit |