| Index | Granby | Missouri | National |
| Average Test Scores | 48% | 44% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 2 | 1,899 | 79,221 |
| Total private schools | n/a | 531 | 24,874 |
| Total post-secondary schools | n/a | 213 | 7,963 |
| Index | Granby | Missouri | National |
| Completed 8th grade | 81.7% | 86.0% | 84.3% |
| Completed high school | 80.1% | 84.2% | 83.0% |
| Completed some college | 51.7% | 57.7% | 59.4% |
| Completed associate degree | 18.1% | 35.2% | 38.5% |
| Completed bachelors | 4.9% | 27.6% | 30.3% |
| Completed masters | 1.7% | 10.4% | 11.5% |
| Completed professional degree | 0.2% | 2.8% | 3.3% |
| Completed doctorate | 0.2% | 1.2% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Granby. Using the proficiency score averages, the average test scores for Granby, MO schools is 48%. The average student to teacher ratio is 15:1. In Granby, MO, an average of 81.7% of students have completed 8th grade and an average of 80.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Neosho, MO | 12,036 | 45% | 6.0% |
| Pierce City, MO | 1,462 | 45% | 6.9% |
| Diamond, MO | 926 | 41% | 14.2% |
| Sarcoxie, MO | 1,596 | 40% | 16.7% |
| Joplin, MO | 50,580 | 38% | 21.4% |
| Granby, MO | 2,224 | 48% | 0.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Spencer, IN | 2,224 | 45% | 7.3% |
| Wesson, MS | 2,224 | 49% | 2.1% |
| Sumner, IA | 2,224 | 71% | 47.9% |
| Brooks, KY | 2,223 | 44% | 8.3% |
| Youngsville, NC | 2,225 | 42% | 12.2% |
| Granby, MO | 2,224 | 48% | 0.5% |
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