| Index | Marshall | 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 | Marshall | Oklahoma | National |
| Completed 8th grade | 76.8% | 83.5% | 84.3% |
| Completed high school | 74.7% | 82.2% | 83.0% |
| Completed some college | 36.8% | 55.6% | 59.4% |
| Completed associate degree | 21.1% | 31.9% | 38.5% |
| Completed bachelors | 9.5% | 24.5% | 30.3% |
| Completed masters | 1.1% | 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 Marshall. Using the proficiency score averages, the average test scores for Marshall, OK schools is n/a. The average student to teacher ratio is n/a. In Marshall, OK, an average of 76.8% of students have completed 8th grade and an average of 74.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Mulhall, OK | 240 | 55% | 13.5% |
| Orlando, OK | 67 | 50% | 4.2% |
| Crescent, OK | 1,368 | 27% | 43.4% |
| Covington, OK | 477 | 25% | 48.4% |
| Marshall, OK | 274 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Grinnell, KS | 274 | 38% | 21.9% |
| Perry, IL | 274 | 20% | 59.4% |
| Kilbourne, LA | 274 | 57% | 18.8% |
| Gamaliel, KY | 274 | 82% | 70.8% |
| Manlius, IL | 274 | 32% | 33.3% |
| Marshall, OK | 274 | n/a |
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