| Index | St. Catharines | Ontario | National |
| Average School Score | 75.6 | 67.5 | 66.1 |
| Total public schools | 78 | 7,342 | 17,366 |
| Index | St. Catharines | Ontario | National |
| No certificate, diploma or degree | 16.0% | 15.9% | 16.7% |
| High School certificate or equivalent | 83.6% | 84.1% | 83.3% |
| Apprenticeship or trades certificate | 52.5% | 56.9% | 56.8% |
| College or other non-university diploma | 45.1% | 51.1% | 47.4% |
| University certificate or below bachelor | 21.7% | 29.8% | 27.5% |
| Bachelor's degree | 20.3% | 27.9% | 25.1% |
| Above bachelor's degree | 6.3% | 9.1% | 8.1% |
| City | Population | Avg. School Score | National Avg. |
| Niagara-on-the-Lake, ON | 20,111 | 88.9 | 34.5% |
| Pelham, ON | 18,077 | 85.2 | 28.8% |
| Lincoln, ON | 27,082 | 78.5 | 18.7% |
| Niagara Falls, ON | 95,282 | 73.3 | 10.9% |
| Thorold, ON | 21,396 | 73.2 | 10.7% |
| St. Catharines, ON | 140,913 | 75.6 | 14.3% |
| City | Population | Avg. School Score | National Avg. |
| Cambridge, ON | 140,221 | 64.0 | 3.2% |
| Milton, ON | 142,128 | 70.9 | 7.2% |
| Whitby, ON | 142,607 | 74.6 | 12.7% |
| Ajax, ON | 138,303 | 69.3 | 4.7% |
| Kelowna, BC | 145,612 | 62.5 | 5.5% |
| St. Catharines, ON | 140,913 | 75.6 | 14.3% |