| Index | Gray | Tennessee | National |
| Average Test Scores | 49% | 35% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 3 | 1,390 | 79,221 |
| Total private schools | 2 | 430 | 24,874 |
| Total post-secondary schools | n/a | 189 | 7,963 |
| Index | Gray | Tennessee | National |
| Completed 8th grade | 86.3% | 82.0% | 84.3% |
| Completed high school | 83.0% | 79.9% | 83.0% |
| Completed some college | 63.0% | 53.2% | 59.4% |
| Completed associate degree | 35.5% | 32.2% | 38.5% |
| Completed bachelors | 30.8% | 25.4% | 30.3% |
| Completed masters | 8.8% | 9.3% | 11.5% |
| Completed professional degree | 1.4% | 2.8% | 3.3% |
| Completed doctorate | 1.4% | 1.2% | 1.3% |
There are a total of 3 public schools, 2 private schools and n/a post-secondary schools in Gray. Using the proficiency score averages, the average test scores for Gray, TN schools is 49%. The average student to teacher ratio is n/a. In Gray, TN, an average of 86.3% of students have completed 8th grade and an average of 83.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Weber City, VA | 1,580 | 94% | 94.8% |
| Johnson City, TN | 66,934 | 52% | 8.9% |
| Mount Carmel, TN | 5,297 | 45% | 7.3% |
| Jonesborough, TN | 5,539 | 43% | 10.4% |
| Telford, TN | 990 | 41% | 15.6% |
| Gray, TN | 1,342 | 49% | 1.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Independence, WI | 1,342 | 32% | 33.0% |
| Albion, PA | 1,342 | 67% | 38.5% |
| Kittitas, WA | 1,342 | 49% | 2.1% |
| Millbrook, NY | 1,342 | 68% | 41.7% |
| Mendon, UT | 1,342 | 65% | 35.4% |
| Gray, TN | 1,342 | 49% | 1.0% |
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