| Index | Oldcastle | Tecumseh | Ontario |
| Average School Score | n/a | 78.0 | 67.5 |
| Total public schools | 1 | 13 | 7,342 |
| Index | Oldcastle | Tecumseh | Ontario |
| No certificate, diploma or degree | 13.0% | 12.0% | 15.9% |
| High School certificate or equivalent | 87.5% | 87.8% | 84.1% |
| Apprenticeship or trades certificate | 55.5% | 59.2% | 56.9% |
| College or other non-university diploma | 48.8% | 51.8% | 51.1% |
| University certificate or below bachelor | 23.1% | 27.1% | 29.8% |
| Bachelor's degree | 23.1% | 25.2% | 27.9% |
| Above bachelor's degree | 6.7% | 7.3% | 9.1% |
| City | Population | Avg. School Score | National Avg. |
| LaSalle, ON | 33,838 | 82.0 | 23.9% |
| Essex, ON | 22,025 | 75.4 | 14.0% |
| Amherstburg, ON | 26,060 | 68.9 | 4.2% |
| Windsor, ON | 230,583 | 65.8 | 0.5% |
| Tecumseh, ON | 25,689 | 78.0 | 18.0% |
| City | Population | Avg. School Score | National Avg. |
| East Gwillimbury, ON | 25,899 | 68.3 | 3.2% |
| Amherstburg, ON | 26,060 | 68.9 | 4.2% |
| Prince Edward County, ON | 25,289 | 59.1 | 10.6% |
| Collingwood, ON | 25,244 | 63.9 | 3.3% |
| Sturgeon County, AB | 24,881 | 66.8 | 0.9% |
| Tecumseh, ON | 25,689 | 78.0 | 18.0% |