| Index | Thornhill | Markham | Ontario |
| Average School Score | 68.2 | 76.6 | 67.5 |
| Total public schools | 5 | 190 | 7,342 |
| Index | Thornhill | Markham | Ontario |
| No certificate, diploma or degree | 13.0% | 15.0% | 15.9% |
| High School certificate or equivalent | 86.8% | 84.9% | 84.1% |
| Apprenticeship or trades certificate | 62.2% | 58.8% | 56.9% |
| College or other non-university diploma | 58.2% | 56.1% | 51.1% |
| University certificate or below bachelor | 43.0% | 40.3% | 29.8% |
| Bachelor's degree | 39.9% | 37.7% | 27.9% |
| Above bachelor's degree | 14.1% | 11.0% | 9.1% |
| City | Population | Avg. School Score | National Avg. |
| Aurora, ON | 61,058 | 76.5 | 15.7% |
| Richmond Hill, ON | 215,407 | 75.9 | 14.7% |
| King, ON | 27,487 | 75.0 | 13.4% |
| Pickering, ON | 96,267 | 73.8 | 11.6% |
| Whitchurch-Stouffville, ON | 52,025 | 73.7 | 11.4% |
| Markham, ON | 359,111 | 76.6 | 15.9% |
| City | Population | Avg. School Score | National Avg. |
| Vaughan, ON | 321,974 | 71.3 | 7.8% |
| London, ON | 421,456 | 63.0 | 4.8% |
| Kitchener, ON | 259,162 | 63.0 | 4.8% |
| Burnaby, BC | 258,827 | 68.2 | 3.0% |
| Windsor, ON | 230,583 | 65.8 | 0.5% |
| Markham, ON | 359,111 | 76.6 | 15.9% |