| Index | Cromwell | Minnesota | National |
| Average Test Scores | 53% | 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 | Cromwell | Minnesota | National |
| Completed 8th grade | 85.8% | 90.5% | 84.3% |
| Completed high school | 80.3% | 89.5% | 83.0% |
| Completed some college | 43.7% | 66.9% | 59.4% |
| Completed associate degree | 14.2% | 45.2% | 38.5% |
| Completed bachelors | 9.8% | 34.2% | 30.3% |
| Completed masters | 2.2% | 11.5% | 11.5% |
| Completed professional degree | 0.0% | 3.5% | 3.3% |
| Completed doctorate | 0.0% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Cromwell. Using the proficiency score averages, the average test scores for Cromwell, MN schools is 53%. The average student to teacher ratio is n/a. In Cromwell, MN, an average of 85.8% of students have completed 8th grade and an average of 80.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Barnum, MN | 618 | 66% | 37.5% |
| Cromwell, MN | 359 | 53% | 10.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Bucklin, MO | 359 | 49% | 1.6% |
| Dietrich, ID | 359 | 52% | 8.3% |
| Nickelsville, VA | 359 | 88% | 82.8% |
| Protection, KS | 360 | 39% | 19.8% |
| Bison, SD | 358 | 47% | 2.8% |
| Cromwell, MN | 359 | 53% | 10.9% |
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