| Index | Gayle Mill | South Carolina | National |
| Average Test Scores | n/a | 47% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 932 | 79,221 |
| Total private schools | n/a | 369 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Gayle Mill | South Carolina | National |
| Completed 8th grade | 66.9% | 83.0% | 84.3% |
| Completed high school | 55.0% | 81.6% | 83.0% |
| Completed some college | 28.1% | 56.6% | 59.4% |
| Completed associate degree | 4.4% | 35.6% | 38.5% |
| Completed bachelors | 3.5% | 26.5% | 30.3% |
| Completed masters | 2.1% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.5% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Gayle Mill. Using the proficiency score averages, the average test scores for Gayle Mill, SC schools is n/a. The average student to teacher ratio is n/a. In Gayle Mill, SC, an average of 66.9% of students have completed 8th grade and an average of 55.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Richburg, SC | 349 | 56% | 17.0% |
| Chester, SC | 5,392 | 29% | 38.9% |
| Gayle Mill, SC | 832 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Sierra Blanca, TX | 832 | 25% | 47.9% |
| Russellville, MO | 832 | 51% | 6.9% |
| Highmore, SD | 832 | 49% | 2.1% |
| Lynn, AL | 832 | 46% | 4.7% |
| Fort Gaines, GA | 832 | 22% | 54.2% |
| Gayle Mill, SC | 832 | n/a |
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