| Index | Preston | Minnesota | National |
| Average Test Scores | 63% | 52% | 48% |
| Student/Teacher ratio | 13:1 | 16:1 | 16:1 |
| Total public schools | 2 | 2,224 | 79,221 |
| Total private schools | n/a | 477 | 24,874 |
| Total post-secondary schools | n/a | 140 | 7,963 |
| Index | Preston | Minnesota | National |
| Completed 8th grade | 91.1% | 90.5% | 84.3% |
| Completed high school | 88.5% | 89.5% | 83.0% |
| Completed some college | 60.4% | 66.9% | 59.4% |
| Completed associate degree | 37.8% | 45.2% | 38.5% |
| Completed bachelors | 26.8% | 34.2% | 30.3% |
| Completed masters | 8.8% | 11.5% | 11.5% |
| Completed professional degree | 1.1% | 3.5% | 3.3% |
| Completed doctorate | 0.4% | 1.4% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Preston. Using the proficiency score averages, the average test scores for Preston, MN schools is 63%. The average student to teacher ratio is 13:1. In Preston, MN, an average of 91.1% of students have completed 8th grade and an average of 88.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Chatfield, MN | 2,746 | 69% | 42.7% |
| Lanesboro, MN | 808 | 60% | 24.0% |
| Harmony, MN | 1,070 | 50% | 3.1% |
| Preston, MN | 1,237 | 63% | 31.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Lincoln Center, KS | 1,237 | 29% | 39.6% |
| Felton, DE | 1,237 | 56% | 17.0% |
| White Cloud, MI | 1,237 | 26% | 45.8% |
| Maud, TX | 1,237 | 44% | 8.3% |
| Timpson, TX | 1,236 | 43% | 10.4% |
| Preston, MN | 1,237 | 63% | 31.3% |
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