| Index | Oakville | Connecticut | National |
| Average Test Scores | 59% | 53% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 3 | 654 | 79,221 |
| Total private schools | 1 | 207 | 24,874 |
| Total post-secondary schools | n/a | 81 | 7,963 |
| Index | Oakville | Connecticut | National |
| Completed 8th grade | 87.1% | 88.0% | 84.3% |
| Completed high school | 86.0% | 86.9% | 83.0% |
| Completed some college | 50.2% | 62.9% | 59.4% |
| Completed associate degree | 29.1% | 45.5% | 38.5% |
| Completed bachelors | 21.4% | 38.0% | 30.3% |
| Completed masters | 10.3% | 16.8% | 11.5% |
| Completed professional degree | 1.0% | 4.6% | 3.3% |
| Completed doctorate | 0.2% | 1.7% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Oakville. Using the proficiency score averages, the average test scores for Oakville, CT schools is 59%. The average student to teacher ratio is 15:1. In Oakville, CT, an average of 87.1% of students have completed 8th grade and an average of 86.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Cheshire Village, CT | 6,491 | 78% | 62.0% |
| Northwest Harwinton, CT | 2,897 | 77% | 60.4% |
| Newtown, CT | 1,921 | 71% | 48.8% |
| Plantsville, CT | 1,923 | 70% | 44.8% |
| Litchfield, CT | 1,279 | 67% | 39.4% |
| Oakville, CT | 9,679 | 59% | 22.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Winfield, IL | 9,683 | 54% | 12.0% |
| Kensington, CT | 9,685 | 62% | 29.9% |
| Hamburg, NY | 9,672 | 65% | 35.8% |
| Key Largo, FL | 9,670 | 61% | 26.0% |
| Hope, AR | 9,668 | 33% | 31.5% |
| Oakville, CT | 9,679 | 59% | 22.4% |
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