| Index | Gateway | Mississauga | Ontario |
| Average School Score | n/a | 69.7 | 67.5 |
| Total public schools | 46 | 366 | 7,342 |
| Index | Gateway | Mississauga | Ontario |
| No certificate, diploma or degree | 13.0% | 14.0% | 15.9% |
| High School certificate or equivalent | 86.5% | 86.4% | 84.1% |
| Apprenticeship or trades certificate | 61.4% | 60.4% | 56.9% |
| College or other non-university diploma | 56.6% | 56.1% | 51.1% |
| University certificate or below bachelor | 40.0% | 37.9% | 29.8% |
| Bachelor's degree | 38.1% | 35.4% | 27.9% |
| Above bachelor's degree | 12.2% | 11.4% | 9.1% |
| City | Population | Avg. School Score | National Avg. |
| Oakville, ON | 212,353 | 77.9 | 17.8% |
| Caledon, ON | 82,130 | 71.6 | 8.3% |
| Vaughan, ON | 321,974 | 71.3 | 7.8% |
| Milton, ON | 142,128 | 70.9 | 7.2% |
| Halton Hills, ON | 65,483 | 68.9 | 4.2% |
| Mississauga, ON | 764,342 | 69.7 | 5.3% |
| City | Population | Avg. School Score | National Avg. |
| Brampton, ON | 735,754 | 65.6 | 0.9% |
| Vancouver, BC | 694,440 | 67.0 | 1.3% |
| Surrey, BC | 560,150 | 62.9 | 4.9% |
| Edmonton, AB | 1,053,392 | 64.5 | 2.4% |
| Ottawa, ON | 1,058,126 | 71.3 | 7.8% |
| Mississauga, ON | 764,342 | 69.7 | 5.3% |