| Index | Greenbriar | 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 | Greenbriar | Florida | National |
| Completed 8th grade | 89.0% | 84.0% | 84.3% |
| Completed high school | 88.1% | 83.0% | 83.0% |
| Completed some college | 68.6% | 58.0% | 59.4% |
| Completed associate degree | 38.8% | 37.4% | 38.5% |
| Completed bachelors | 31.5% | 27.9% | 30.3% |
| Completed masters | 7.3% | 10.0% | 11.5% |
| Completed professional degree | 2.3% | 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 Greenbriar. Using the proficiency score averages, the average test scores for Greenbriar, FL schools is n/a. The average student to teacher ratio is n/a. In Greenbriar, FL, an average of 89.0% of students have completed 8th grade and an average of 88.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Madeira Beach, FL | 4,303 | 80% | 65.6% |
| Odessa, FL | 7,808 | 79% | 64.2% |
| Trinity, FL | 12,761 | 74% | 54.2% |
| Palm Harbor, FL | 61,787 | 72% | 49.8% |
| Tarpon Springs, FL | 25,389 | 71% | 47.9% |
| Greenbriar, FL | 2,764 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Trinity, TX | 2,764 | 28% | 41.3% |
| Chase City, VA | 2,763 | 80% | 65.6% |
| Loudonville, OH | 2,765 | 63% | 31.8% |
| Westfield, NY | 2,766 | 68% | 40.6% |
| Burns, OR | 2,766 | 37% | 24.0% |
| Greenbriar, FL | 2,764 | n/a |
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