| Index | Ottertail | Minnesota | National |
| Average Test Scores | n/a | 52% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 2,224 | 79,221 |
| Total private schools | n/a | 477 | 24,874 |
| Total post-secondary schools | n/a | 140 | 7,963 |
| Index | Ottertail | Minnesota | National |
| Completed 8th grade | 90.8% | 90.5% | 84.3% |
| Completed high school | 90.2% | 89.5% | 83.0% |
| Completed some college | 62.2% | 66.9% | 59.4% |
| Completed associate degree | 37.8% | 45.2% | 38.5% |
| Completed bachelors | 24.1% | 34.2% | 30.3% |
| Completed masters | 8.7% | 11.5% | 11.5% |
| Completed professional degree | 2.5% | 3.5% | 3.3% |
| Completed doctorate | 1.1% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Ottertail. Using the proficiency score averages, the average test scores for Ottertail, MN schools is n/a. The average student to teacher ratio is n/a. In Ottertail, MN, an average of 90.8% of students have completed 8th grade and an average of 90.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Battle Lake, MN | 639 | 71% | 47.4% |
| Henning, MN | 806 | 62% | 29.2% |
| Perham, MN | 3,506 | 59% | 23.3% |
| New York Mills, MN | 1,249 | 58% | 21.4% |
| Underwood, MN | 389 | 57% | 18.8% |
| Ottertail, MN | 531 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Pretty Prairie, KS | 531 | 43% | 10.1% |
| Livingston, WI | 531 | 39% | 19.8% |
| Stantonsburg, NC | 531 | 36% | 26.0% |
| Calumet, OK | 531 | 49% | 1.7% |
| Hartland, ME | 531 | 26% | 46.9% |
| Ottertail, MN | 531 | n/a |
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