| Index | North Grosvenor Dale | Connecticut | National |
| Average Test Scores | 42% | 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 | North Grosvenor Dale | Connecticut | National |
| Completed 8th grade | 79.8% | 88.0% | 84.3% |
| Completed high school | 74.2% | 86.9% | 83.0% |
| Completed some college | 54.2% | 62.9% | 59.4% |
| Completed associate degree | 26.6% | 45.5% | 38.5% |
| Completed bachelors | 13.7% | 38.0% | 30.3% |
| Completed masters | 7.0% | 16.8% | 11.5% |
| Completed professional degree | 0.0% | 4.6% | 3.3% |
| Completed doctorate | 0.0% | 1.7% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in North Grosvenor Dale. Using the proficiency score averages, the average test scores for North Grosvenor Dale, CT schools is 42%. The average student to teacher ratio is n/a. In North Grosvenor Dale, CT, an average of 79.8% of students have completed 8th grade and an average of 74.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clayville, RI | 81 | 62% | 29.2% |
| Fiskdale, MA | 3,015 | 61% | 27.8% |
| East Douglas, MA | 2,985 | 57% | 19.4% |
| Chepachet, RI | 1,673 | 57% | 18.8% |
| Sturbridge, MA | 2,101 | 55% | 14.6% |
| North Grosvenor Dale, CT | 1,180 | 42% | 12.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Woodbury, GA | 1,180 | 12% | 75.0% |
| Cottonwood, MN | 1,180 | 61% | 27.1% |
| Lexington, MI | 1,180 | 72% | 50.0% |
| Peabody, KS | 1,180 | 20% | 58.9% |
| West Swanzey, NH | 1,180 | 45% | 7.3% |
| North Grosvenor Dale, CT | 1,180 | 42% | 12.8% |
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