| Index | Lake Mills | Iowa | National |
| Average Test Scores | 75% | 69% | 48% |
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 |
| Total public schools | 3 | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Lake Mills | Iowa | National |
| Completed 8th grade | 86.5% | 89.2% | 84.3% |
| Completed high school | 84.6% | 87.7% | 83.0% |
| Completed some college | 57.0% | 59.8% | 59.4% |
| Completed associate degree | 36.7% | 38.4% | 38.5% |
| Completed bachelors | 22.8% | 27.2% | 30.3% |
| Completed masters | 5.9% | 8.7% | 11.5% |
| Completed professional degree | 1.0% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Lake Mills. Using the proficiency score averages, the average test scores for Lake Mills, IA schools is 75%. The average student to teacher ratio is 14:1. In Lake Mills, IA, an average of 86.5% of students have completed 8th grade and an average of 84.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Forest City, IA | 4,117 | 75% | 55.9% |
| Glenville, MN | 631 | 46% | 4.2% |
| Lake Mills, IA | 2,108 | 75% | 55.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Narrows, VA | 2,108 | 79% | 64.6% |
| Rising Sun, IN | 2,108 | 42% | 12.5% |
| Frankton, IN | 2,107 | 46% | 4.7% |
| Springfield, SD | 2,110 | 70% | 45.8% |
| Richmond, IL | 2,106 | 53% | 9.4% |
| Lake Mills, IA | 2,108 | 75% | 55.6% |
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