| Index | North Granby | Connecticut | National |
| Average Test Scores | n/a | 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 Granby | Connecticut | National |
| Completed 8th grade | 98.4% | 88.0% | 84.3% |
| Completed high school | 98.1% | 86.9% | 83.0% |
| Completed some college | 89.1% | 62.9% | 59.4% |
| Completed associate degree | 83.4% | 45.5% | 38.5% |
| Completed bachelors | 73.8% | 38.0% | 30.3% |
| Completed masters | 18.3% | 16.8% | 11.5% |
| Completed professional degree | 4.1% | 4.6% | 3.3% |
| Completed doctorate | 4.1% | 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 Granby. Using the proficiency score averages, the average test scores for North Granby, CT schools is n/a. The average student to teacher ratio is n/a. In North Granby, CT, an average of 98.4% of students have completed 8th grade and an average of 98.1% 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% |
| Weatogue, CT | 2,396 | 72% | 49.0% |
| Collinsville, CT | 3,729 | 71% | 47.9% |
| Salmon Brook, CT | 2,348 | 71% | 47.4% |
| North Granby, CT | 1,425 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Louisville, NE | 1,425 | 60% | 24.3% |
| Green Springs, OH | 1,426 | 77% | 60.4% |
| Spring Valley, WI | 1,424 | 42% | 12.5% |
| Grand Marais, MN | 1,426 | 48% | 0.3% |
| Zebulon, GA | 1,427 | 36% | 24.5% |
| North Granby, CT | 1,425 | n/a |
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