| Index | St. Marys | Ontario | National |
| Average School Score | 77.1 | 67.5 | 66.1 |
| Total public schools | 4 | 7,342 | 17,366 |
| Index | St. Marys | Ontario | National |
| No certificate, diploma or degree | 18.0% | 15.9% | 16.7% |
| High School certificate or equivalent | 81.9% | 84.1% | 83.3% |
| Apprenticeship or trades certificate | 49.8% | 56.9% | 56.8% |
| College or other non-university diploma | 43.1% | 51.1% | 47.4% |
| University certificate or below bachelor | 17.4% | 29.8% | 27.5% |
| Bachelor's degree | 15.9% | 27.9% | 25.1% |
| Above bachelor's degree | 5.0% | 9.1% | 8.1% |
| City | Population | Avg. School Score | National Avg. |
| Perth South, ON | 4,205 | 81.7 | 23.5% |
| West Perth, ON | 9,223 | 77.5 | 17.2% |
| Stratford, ON | 34,224 | 70.7 | 6.8% |
| Lucan Biddulph, ON | 5,179 | 64.5 | 2.5% |
| Zorra, ON | 8,659 | 63.0 | 4.8% |
| St. Marys, ON | 8,093 | 77.1 | 16.5% |
| City | Population | Avg. School Score | National Avg. |
| Bayham, ON | 8,067 | 47.0 | 28.9% |
| Innisfail, AB | 8,040 | 62.7 | 5.2% |
| The Blue Mountains, ON | 8,029 | 81.8 | 23.7% |
| Stone Mills, ON | 8,012 | 62.8 | 5.1% |
| Bluewater, ON | 7,997 | 72.4 | 9.4% |
| St. Marys, ON | 8,093 | 77.1 | 16.5% |
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