| Index | Mellen | Wisconsin | National |
| Average Test Scores | 32% | 41% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,869 | 79,221 |
| Total private schools | n/a | 872 | 24,874 |
| Total post-secondary schools | n/a | 114 | 7,963 |
| Index | Mellen | Wisconsin | National |
| Completed 8th grade | 85.5% | 89.0% | 84.3% |
| Completed high school | 83.6% | 87.8% | 83.0% |
| Completed some college | 46.9% | 59.7% | 59.4% |
| Completed associate degree | 24.4% | 38.7% | 38.5% |
| Completed bachelors | 10.5% | 28.4% | 30.3% |
| Completed masters | 2.5% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.7% | 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 Mellen. Using the proficiency score averages, the average test scores for Mellen, WI schools is 32%. The average student to teacher ratio is n/a. In Mellen, WI, an average of 85.5% of students have completed 8th grade and an average of 83.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Glidden, WI | 231 | 47% | 1.6% |
| Mellen, WI | 573 | 32% | 33.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Middleburg, VA | 573 | 87% | 81.3% |
| Bell, FL | 573 | 66% | 38.0% |
| Alberton, MT | 573 | 40% | 16.7% |
| Lee, FL | 573 | 62% | 29.2% |
| Sherman, NY | 574 | 71% | 47.4% |
| Mellen, WI | 573 | 32% | 33.3% |
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