| 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 | 83 | 62% | 29.2% |
| Fiskdale, MA | 3,128 | 61% | 27.8% |
| East Douglas, MA | 3,073 | 57% | 19.4% |
| Chepachet, RI | 1,735 | 57% | 18.8% |
| Sturbridge, MA | 2,156 | 55% | 14.6% |
| North Grosvenor Dale, CT | 1,215 | 42% | 12.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Elgin, MN | 1,214 | 68% | 41.1% |
| New Sharon, IA | 1,216 | 72% | 50.0% |
| Vernon Valley, NJ | 1,214 | 48% | 1.0% |
| Skagway, AK | 1,216 | 82% | 70.8% |
| Bruceton, TN | 1,214 | 36% | 25.5% |
| North Grosvenor Dale, CT | 1,215 | 42% | 12.8% |