| Index | Stock Island | Florida | National |
| Average Test Scores | n/a | 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 | Stock Island | Florida | National |
| Completed 8th grade | 74.7% | 84.0% | 84.3% |
| Completed high school | 74.0% | 83.0% | 83.0% |
| Completed some college | 42.7% | 58.0% | 59.4% |
| Completed associate degree | 24.8% | 37.4% | 38.5% |
| Completed bachelors | 16.9% | 27.9% | 30.3% |
| Completed masters | 5.4% | 10.0% | 11.5% |
| Completed professional degree | 1.2% | 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 Stock Island. Using the proficiency score averages, the average test scores for Stock Island, FL schools is n/a. The average student to teacher ratio is n/a. In Stock Island, FL, an average of 74.7% of students have completed 8th grade and an average of 74.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Key West, FL | 24,495 | 59% | 23.5% |
| Stock Island, FL | 4,692 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Dexter, MI | 4,691 | 68% | 42.4% |
| Middletown, MD | 4,694 | 69% | 44.4% |
| Rio Bravo, TX | 4,686 | 46% | 5.2% |
| Flora, IL | 4,686 | 28% | 41.7% |
| Headland, AL | 4,684 | 44% | 8.3% |
| Stock Island, FL | 4,692 | n/a |
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