| Index | Key Biscayne | Florida | National |
| Average Test Scores | 86% | 55% | 48% |
| Student/Teacher ratio | 18:1 | 17:1 | 16:1 |
| Total public schools | 1 | 3,388 | 79,221 |
| Total private schools | 3 | 1,640 | 24,874 |
| Total post-secondary schools | n/a | 466 | 7,963 |
| Index | Key Biscayne | Florida | National |
| Completed 8th grade | 97.3% | 84.0% | 84.3% |
| Completed high school | 97.1% | 83.0% | 83.0% |
| Completed some college | 89.4% | 58.0% | 59.4% |
| Completed associate degree | 76.3% | 37.4% | 38.5% |
| Completed bachelors | 70.6% | 27.9% | 30.3% |
| Completed masters | 33.7% | 10.0% | 11.5% |
| Completed professional degree | 14.4% | 3.1% | 3.3% |
| Completed doctorate | 3.8% | 1.1% | 1.3% |
There are a total of 1 public schools, 3 private schools and n/a post-secondary schools in Key Biscayne. Using the proficiency score averages, the average test scores for Key Biscayne, FL schools is 86%. The average student to teacher ratio is 18:1. In Key Biscayne, FL, an average of 97.3% of students have completed 8th grade and an average of 97.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| South Miami, FL | 11,958 | 82% | 70.4% |
| Bay Harbor Islands, FL | 5,832 | 81% | 68.8% |
| Coral Gables, FL | 49,937 | 78% | 62.2% |
| Doral, FL | 62,367 | 76% | 58.7% |
| Palmetto Bay, FL | 24,308 | 73% | 52.1% |
| Key Biscayne, FL | 12,867 | 86% | 79.7% |
| City | Population | Avg. Test Scores | National Avg. |
| South Sioux City, NE | 12,867 | 46% | 4.5% |
| Kingston, PA | 12,859 | 37% | 22.7% |
| Willow Grove, PA | 12,881 | 75% | 56.9% |
| Glendale, WI | 12,890 | 50% | 3.8% |
| Edgewater, NJ | 12,890 | 55% | 13.5% |
| Key Biscayne, FL | 12,867 | 86% | 79.7% |
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