| Index | Cromwell | Indiana | National |
| Average Test Scores | n/a | 46% | 48% |
| Student/Teacher ratio | n/a | 22:1 | 16:1 |
| Total public schools | n/a | 1,755 | 79,221 |
| Total private schools | n/a | 675 | 24,874 |
| Total post-secondary schools | n/a | 141 | 7,963 |
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| Index | Cromwell | Indiana | National |
| Completed 8th grade | 76.1% | 84.6% | 84.3% |
| Completed high school | 71.0% | 82.9% | 83.0% |
| Completed some college | 33.0% | 53.8% | 59.4% |
| Completed associate degree | 7.2% | 33.0% | 38.5% |
| Completed bachelors | 6.5% | 24.6% | 30.3% |
| Completed masters | 1.1% | 8.9% | 11.5% |
| Completed professional degree | 0.0% | 2.4% | 3.3% |
| Completed doctorate | 0.0% | 1.0% | 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, IN schools is n/a. The average student to teacher ratio is n/a. In Cromwell, IN, an average of 76.1% of students have completed 8th grade and an average of 71.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Topeka, IN | 946 | 60% | 25.7% |
| Millersburg, IN | 807 | 60% | 24.0% |
| New Paris, IN | 1,464 | 59% | 22.9% |
| Winona Lake, IN | 4,902 | 50% | 4.2% |
| Warsaw, IN | 15,757 | 50% | 3.9% |
| Cromwell, IN | 479 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Cherry, IL | 479 | 50% | 4.2% |
| Oklee, MN | 479 | 50% | 3.1% |
| La Grange, WY | 479 | 50% | 4.2% |
| Sargent, NE | 479 | 50% | 4.2% |
| Big Piney, WY | 479 | 56% | 17.0% |
| Cromwell, IN | 479 | n/a |
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