| Index | Dennis | Oklahoma | National |
| Average Test Scores | n/a | 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 | Dennis | Oklahoma | National |
| Completed 8th grade | 82.8% | 83.5% | 84.3% |
| Completed high school | 82.8% | 82.2% | 83.0% |
| Completed some college | 54.7% | 55.6% | 59.4% |
| Completed associate degree | 26.6% | 31.9% | 38.5% |
| Completed bachelors | 15.6% | 24.5% | 30.3% |
| Completed masters | 0.0% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.3% | 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 Dennis. Using the proficiency score averages, the average test scores for Dennis, OK schools is n/a. The average student to teacher ratio is n/a. In Dennis, OK, an average of 82.8% of students have completed 8th grade and an average of 82.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Southwest City, MO | 1,064 | 48% | = 100 |
| Grove, OK | 7,060 | 42% | 13.5% |
| Fairland, OK | 1,187 | 39% | 19.1% |
| Afton, OK | 906 | 34% | 29.9% |
| Ketchum, OK | 451 | 31% | 36.5% |
| Dennis, OK | 91 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Moffett, OK | 91 | 45% | 7.3% |
| Floyd, NM | 91 | 29% | 39.6% |
| King and Queen Court House, VA | 90 | 77% | 60.4% |
| Panola, OK | 90 | 38% | 21.9% |
| Solen, ND | 90 | 10% | 79.2% |
| Dennis, OK | 91 | n/a |
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