| Index | Marathon | Ontario | National |
| Average School Score | 62.6 | 67.5 | 66.1 |
| Total public schools | 9 | 7,342 | 17,366 |
| Index | Marathon | Ontario | National |
| No certificate, diploma or degree | 20.0% | 15.9% | 16.7% |
| High School certificate or equivalent | 80.0% | 84.1% | 83.3% |
| Apprenticeship or trades certificate | 54.1% | 56.9% | 56.8% |
| College or other non-university diploma | 40.4% | 51.1% | 47.4% |
| University certificate or below bachelor | 13.6% | 29.8% | 27.5% |
| Bachelor's degree | 12.7% | 27.9% | 25.1% |
| Above bachelor's degree | 2.6% | 9.1% | 8.1% |
| City | Population | Avg. School Score | National Avg. |
| Marathon, ON | 3,386 | 62.6 | 5.4% |
| City | Population | Avg. School Score | National Avg. |
| Grand Valley, ON | 3,347 | 48.0 | 27.4% |
| Gibbons, AB | 3,425 | 66.4 | 0.3% |
| Three Hills, AB | 3,327 | 66.1 | 0.1% |
| Adelaide-Metcalfe, ON | 3,322 | 73.2 | 10.6% |
| Merrickville-Wolford, ON | 3,315 | 75.5 | 14.1% |
| Marathon, ON | 3,386 | 62.6 | 5.4% |