| Index | Gray | Maine | National |
| Average Test Scores | 47% | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 345 | 79,221 |
| Total private schools | n/a | 89 | 24,874 |
| Total post-secondary schools | n/a | 45 | 7,963 |
| Index | Gray | Maine | National |
| Completed 8th grade | 76.4% | 88.3% | 84.3% |
| Completed high school | 76.4% | 86.8% | 83.0% |
| Completed some college | 65.8% | 58.8% | 59.4% |
| Completed associate degree | 41.3% | 39.0% | 38.5% |
| Completed bachelors | 32.4% | 29.3% | 30.3% |
| Completed masters | 8.7% | 10.5% | 11.5% |
| Completed professional degree | 0.0% | 3.0% | 3.3% |
| Completed doctorate | 0.0% | 1.3% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Gray. Using the proficiency score averages, the average test scores for Gray, ME schools is 47%. The average student to teacher ratio is n/a. In Gray, ME, an average of 76.4% of students have completed 8th grade and an average of 76.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Falmouth, ME | 1,877 | 75% | 55.9% |
| Yarmouth, ME | 5,752 | 74% | 53.5% |
| Cumberland Center, ME | 2,944 | 72% | 49.7% |
| Freeport, ME | 1,879 | 60% | 25.3% |
| Gorham, ME | 7,322 | 57% | 19.2% |
| Gray, ME | 747 | 47% | 1.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Twin Valley, MN | 747 | 51% | 6.3% |
| Moscow, TN | 747 | 22% | 54.2% |
| Meadville, MS | 747 | 44% | 7.6% |
| Karlstad, MN | 747 | 62% | 29.7% |
| Wayne, OK | 747 | 29% | 39.9% |
| Gray, ME | 747 | 47% | 1.7% |
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