| Index | Lakeville | Connecticut | National |
| Average Test Scores | 72% | 53% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 654 | 79,221 |
| Total private schools | n/a | 207 | 24,874 |
| Total post-secondary schools | n/a | 81 | 7,963 |


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| Index | Lakeville | Connecticut | National |
| Completed 8th grade | 98.2% | 88.0% | 84.3% |
| Completed high school | 97.1% | 86.9% | 83.0% |
| Completed some college | 89.5% | 62.9% | 59.4% |
| Completed associate degree | 71.4% | 45.5% | 38.5% |
| Completed bachelors | 50.1% | 38.0% | 30.3% |
| Completed masters | 27.2% | 16.8% | 11.5% |
| Completed professional degree | 3.8% | 4.6% | 3.3% |
| Completed doctorate | 2.5% | 1.7% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Lakeville. Using the proficiency score averages, the average test scores for Lakeville, CT schools is 72%. The average student to teacher ratio is n/a. In Lakeville, CT, an average of 98.2% of students have completed 8th grade and an average of 97.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Millbrook, NY | 1,342 | 68% | 41.7% |
| Litchfield, CT | 1,279 | 67% | 39.4% |
| Norfolk, CT | 639 | 60% | 25.0% |
| Sharon, CT | 635 | 57% | 18.8% |
| Falls Village, CT | 509 | 56% | 16.7% |
| Lakeville, CT | 830 | 72% | 50.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Cardwell, MO | 830 | 29% | 40.6% |
| Loudon, NH | 830 | 55% | 13.5% |
| Shalimar, FL | 830 | 62% | 28.8% |
| Stafford, KS | 830 | 28% | 42.7% |
| Hanna, WY | 830 | 51% | 6.3% |
| Lakeville, CT | 830 | 72% | 50.0% |