| Index | St. Marks | Florida | National |
| Average Test Scores | 32% | 55% | 48% |
| Student/Teacher ratio | n/a | 17:1 | 16:1 |
| Total public schools | n/a | 3,388 | 79,221 |
| Total private schools | n/a | 1,640 | 24,874 |
| Total post-secondary schools | n/a | 466 | 7,963 |
| Index | St. Marks | Florida | National |
| Completed 8th grade | 85.8% | 84.0% | 84.3% |
| Completed high school | 85.3% | 83.0% | 83.0% |
| Completed some college | 51.1% | 58.0% | 59.4% |
| Completed associate degree | 36.8% | 37.4% | 38.5% |
| Completed bachelors | 26.8% | 27.9% | 30.3% |
| Completed masters | 4.2% | 10.0% | 11.5% |
| Completed professional degree | 0.0% | 3.1% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in St. Marks. Using the proficiency score averages, the average test scores for St. Marks, FL schools is 32%. The average student to teacher ratio is n/a. In St. Marks, FL, an average of 85.8% of students have completed 8th grade and an average of 85.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Crawfordville, FL | 4,113 | 63% | 30.3% |
| St. Marks, FL | 340 | 32% | 33.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Winthrop, WA | 340 | 57% | 19.3% |
| St. Thomas, ND | 340 | 50% | 4.2% |
| St. Michael, AK | 340 | 13% | 74.0% |
| Broadlands, IL | 340 | 20% | 58.3% |
| Haworth, OK | 340 | 24% | 50.3% |
| St. Marks, FL | 340 | 32% | 33.3% |
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