| Index | Mississippi Mills | Ontario | National |
| Average School Score | 74.1 | 67.5 | 66.1 |
| Total public schools | 7 | 7,342 | 17,366 |
| Index | Mississippi Mills | Ontario | National |
| No certificate, diploma or degree | 13.0% | 15.9% | 16.7% |
| High School certificate or equivalent | 87.2% | 84.1% | 83.3% |
| Apprenticeship or trades certificate | 59.8% | 56.9% | 56.8% |
| College or other non-university diploma | 51.5% | 51.1% | 47.4% |
| University certificate or below bachelor | 23.1% | 29.8% | 27.5% |
| Bachelor's degree | 21.1% | 27.9% | 25.1% |
| Above bachelor's degree | 6.2% | 9.1% | 8.1% |
| City | Population | Avg. School Score | National Avg. |
| Arnprior, ON | 9,608 | 73.4 | 10.9% |
| Carleton Place, ON | 11,965 | 72.0 | 8.9% |
| Lanark Highlands, ON | 5,714 | 49.7 | 24.9% |
| Mississippi Mills, ON | 14,064 | 74.1 | 12.0% |
| City | Population | Avg. School Score | National Avg. |
| Guelph/Eramosa, ON | 13,999 | 71.0 | 7.3% |
| Powell River, BC | 13,967 | 61.7 | 6.8% |
| North Perth, ON | 14,233 | 71.5 | 8.1% |
| The Nation / La Nation, ON | 13,890 | 73.2 | 10.6% |
| Lacombe, AB | 13,889 | 62.2 | 6.0% |
| Mississippi Mills, ON | 14,064 | 74.1 | 12.0% |