| Index | Mills | Wyoming | National |
| Average Test Scores | n/a | 53% | 48% |
| Student/Teacher ratio | 13:1 | 12:1 | 16:1 |
| Total public schools | 1 | 271 | 79,221 |
| Total private schools | n/a | 36 | 24,874 |
| Total post-secondary schools | n/a | 14 | 7,963 |
| Index | Mills | Wyoming | National |
| Completed 8th grade | 75.1% | 88.0% | 84.3% |
| Completed high school | 73.9% | 87.3% | 83.0% |
| Completed some college | 43.8% | 63.2% | 59.4% |
| Completed associate degree | 12.3% | 36.7% | 38.5% |
| Completed bachelors | 3.0% | 26.0% | 30.3% |
| Completed masters | 0.3% | 8.8% | 11.5% |
| Completed professional degree | 0.1% | 2.6% | 3.3% |
| Completed doctorate | 0.1% | 1.2% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Mills. Using the proficiency score averages, the average test scores for Mills, WY schools is n/a. The average student to teacher ratio is 13:1. In Mills, WY, an average of 75.1% of students have completed 8th grade and an average of 73.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Evansville, WY | 2,974 | 52% | 8.3% |
| Casper, WY | 58,287 | 48% | 0.5% |
| Mills, WY | 3,955 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Wonder Lake, IL | 3,955 | 23% | 53.1% |
| Ashland, MO | 3,956 | 48% | = 100 |
| Weaverville, NC | 3,956 | 56% | 16.0% |
| Southgate, KY | 3,957 | 47% | 2.1% |
| Plains, PA | 3,958 | 42% | 12.5% |
| Mills, WY | 3,955 | n/a |
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