| Index | Granby | Massachusetts | National |
| Average Test Scores | 45% | 52% | 48% |
| Student/Teacher ratio | 13:1 | 14:1 | 16:1 |
| Total public schools | 3 | 1,167 | 79,221 |
| Total private schools | 1 | 508 | 24,874 |
| Total post-secondary schools | n/a | 193 | 7,963 |
| Index | Granby | Massachusetts | National |
| Completed 8th grade | 91.9% | 88.3% | 84.3% |
| Completed high school | 88.5% | 87.2% | 83.0% |
| Completed some college | 64.5% | 65.0% | 59.4% |
| Completed associate degree | 44.8% | 49.0% | 38.5% |
| Completed bachelors | 35.6% | 41.2% | 30.3% |
| Completed masters | 17.6% | 18.2% | 11.5% |
| Completed professional degree | 1.6% | 5.4% | 3.3% |
| Completed doctorate | 0.0% | 2.6% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Granby. Using the proficiency score averages, the average test scores for Granby, MA schools is 45%. The average student to teacher ratio is 13:1. In Granby, MA, an average of 91.9% of students have completed 8th grade and an average of 88.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Wilbraham, MA | 3,251 | 63% | 30.2% |
| Hatfield, MA | 1,154 | 58% | 21.4% |
| Amherst Center, MA | 20,037 | 58% | 19.8% |
| South Deerfield, MA | 2,150 | 56% | 15.6% |
| Agawam Town, MA | 28,627 | 55% | 13.7% |
| Granby, MA | 1,183 | 45% | 7.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Chesapeake, OH | 1,183 | 63% | 30.2% |
| North Collins, NY | 1,183 | 47% | 2.1% |
| Salem, SD | 1,183 | 48% | = 100 |
| Sunriver, OR | 1,183 | 61% | 27.1% |
| Cave Spring, GA | 1,183 | 29% | 40.6% |
| Granby, MA | 1,183 | 45% | 7.3% |
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