| Index | Gillette | Wyoming | National |
| Average Test Scores | 47% | 53% | 48% |
| Student/Teacher ratio | 13:1 | 12:1 | 16:1 |
| Total public schools | 16 | 271 | 79,221 |
| Total private schools | 1 | 36 | 24,874 |
| Total post-secondary schools | 1 | 14 | 7,963 |
| Index | Gillette | Wyoming | National |
| Completed 8th grade | 85.6% | 88.0% | 84.3% |
| Completed high school | 84.2% | 87.3% | 83.0% |
| Completed some college | 56.7% | 63.2% | 59.4% |
| Completed associate degree | 29.0% | 36.7% | 38.5% |
| Completed bachelors | 18.3% | 26.0% | 30.3% |
| Completed masters | 5.0% | 8.8% | 11.5% |
| Completed professional degree | 1.3% | 2.6% | 3.3% |
| Completed doctorate | 0.3% | 1.2% | 1.3% |
There are a total of 16 public schools, 1 private schools and 1 post-secondary schools in Gillette. Using the proficiency score averages, the average test scores for Gillette, WY schools is 47%. The average student to teacher ratio is 13:1. In Gillette, WY, an average of 85.6% of students have completed 8th grade and an average of 84.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Gillette, WY | 33,262 | 47% | 2.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Westlake, OH | 33,231 | 86% | 78.1% |
| Graham, WA | 33,304 | 58% | 21.6% |
| Jackson, MI | 33,318 | 31% | 34.6% |
| Spring Valley, NY | 33,202 | 56% | 17.4% |
| Goleta, CA | 33,194 | 58% | 21.2% |
| Gillette, WY | 33,262 | 47% | 2.0% |
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