| Index | Cromwell | Oklahoma | National |
| Average Test Scores | 19% | 32% | 48% |
| Student/Teacher ratio | n/a | 22:1 | 16:1 |
| Total public schools | n/a | 1,346 | 79,221 |
| Total private schools | n/a | 159 | 24,874 |
| Total post-secondary schools | n/a | 178 | 7,963 |
| Index | Cromwell | Oklahoma | National |
| Completed 8th grade | 70.6% | 83.5% | 84.3% |
| Completed high school | 67.3% | 82.2% | 83.0% |
| Completed some college | 39.9% | 55.6% | 59.4% |
| Completed associate degree | 15.0% | 31.9% | 38.5% |
| Completed bachelors | 11.1% | 24.5% | 30.3% |
| Completed masters | 6.5% | 8.1% | 11.5% |
| Completed professional degree | 0.7% | 2.3% | 3.3% |
| Completed doctorate | 0.7% | 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, OK schools is 19%. The average student to teacher ratio is n/a. In Cromwell, OK, an average of 70.6% of students have completed 8th grade and an average of 67.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Prague, OK | 1,851 | 43% | 11.1% |
| Bowlegs, OK | 406 | 34% | 30.2% |
| Paden, OK | 421 | 32% | 32.8% |
| Seminole, OK | 7,155 | 27% | 43.0% |
| Okemah, OK | 3,275 | 24% | 50.8% |
| Cromwell, OK | 307 | 19% | 61.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Vinton, OH | 307 | 60% | 24.0% |
| Kinderhook, IL | 307 | 27% | 43.8% |
| Switz City, IN | 307 | 45% | 6.3% |
| Hersey, MI | 308 | 13% | 74.0% |
| Townville, PA | 308 | 46% | 5.2% |
| Cromwell, OK | 307 | 19% | 61.5% |
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