| Index | Cudjoe Key | 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 | Cudjoe Key | Florida | National |
| Completed 8th grade | 92.4% | 84.0% | 84.3% |
| Completed high school | 91.3% | 83.0% | 83.0% |
| Completed some college | 69.6% | 58.0% | 59.4% |
| Completed associate degree | 45.9% | 37.4% | 38.5% |
| Completed bachelors | 38.8% | 27.9% | 30.3% |
| Completed masters | 17.1% | 10.0% | 11.5% |
| Completed professional degree | 5.9% | 3.1% | 3.3% |
| Completed doctorate | 1.6% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Cudjoe Key. Using the proficiency score averages, the average test scores for Cudjoe Key, FL schools is n/a. The average student to teacher ratio is n/a. In Cudjoe Key, FL, an average of 92.4% of students have completed 8th grade and an average of 91.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Big Pine Key, FL | 4,970 | 83% | 71.9% |
| Cudjoe Key, FL | 2,231 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Madison, NC | 2,231 | 39% | 19.1% |
| Northwood, IA | 2,232 | 67% | 39.6% |
| Apalachin, NY | 2,230 | 53% | 10.9% |
| Colquitt, GA | 2,230 | 32% | 32.6% |
| Wellington, TX | 2,233 | 52% | 8.7% |
| Cudjoe Key, FL | 2,231 | n/a |
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