| Index | Collinsville | Connecticut | National |
| Average Test Scores | 71% | 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 |
| Index | Collinsville | Connecticut | National |
| Completed 8th grade | 93.2% | 88.0% | 84.3% |
| Completed high school | 91.9% | 86.9% | 83.0% |
| Completed some college | 77.7% | 62.9% | 59.4% |
| Completed associate degree | 54.9% | 45.5% | 38.5% |
| Completed bachelors | 46.5% | 38.0% | 30.3% |
| Completed masters | 25.0% | 16.8% | 11.5% |
| Completed professional degree | 5.5% | 4.6% | 3.3% |
| Completed doctorate | 2.7% | 1.7% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Collinsville. Using the proficiency score averages, the average test scores for Collinsville, CT schools is 71%. The average student to teacher ratio is n/a. In Collinsville, CT, an average of 93.2% of students have completed 8th grade and an average of 91.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Simsbury Center, CT | 6,271 | 79% | 63.5% |
| West Simsbury, CT | 3,131 | 77% | 60.4% |
| Northwest Harwinton, CT | 2,897 | 77% | 60.4% |
| Weatogue, CT | 2,396 | 72% | 49.0% |
| Salmon Brook, CT | 2,348 | 71% | 47.4% |
| Collinsville, CT | 3,729 | 71% | 47.9% |
| City | Population | Avg. Test Scores | National Avg. |
| San Andreas, CA | 3,729 | 41% | 15.6% |
| Northumberland, PA | 3,732 | 54% | 12.0% |
| Albia, IA | 3,732 | 78% | 62.5% |
| Larned, KS | 3,732 | 29% | 39.9% |
| Lancaster, WI | 3,725 | 41% | 14.6% |
| Collinsville, CT | 3,729 | 71% | 47.9% |
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