| Index | San Castle | 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 | San Castle | Florida | National |
| Completed 8th grade | 68.8% | 84.0% | 84.3% |
| Completed high school | 62.7% | 83.0% | 83.0% |
| Completed some college | 31.0% | 58.0% | 59.4% |
| Completed associate degree | 16.7% | 37.4% | 38.5% |
| Completed bachelors | 9.7% | 27.9% | 30.3% |
| Completed masters | 2.1% | 10.0% | 11.5% |
| Completed professional degree | 0.9% | 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 San Castle. Using the proficiency score averages, the average test scores for San Castle, FL schools is n/a. The average student to teacher ratio is n/a. In San Castle, FL, an average of 68.8% of students have completed 8th grade and an average of 62.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Palm Beach, FL | 8,776 | 77% | 60.4% |
| Boca Raton, FL | 98,776 | 76% | 57.3% |
| Wellington, FL | 64,990 | 74% | 54.5% |
| The Acreage, FL | 39,863 | 71% | 46.9% |
| Loxahatchee Groves, FL | 3,557 | 69% | 43.8% |
| San Castle, FL | 4,061 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Boyertown, PA | 4,061 | 69% | 43.1% |
| San Diego, TX | 4,062 | 31% | 35.1% |
| Clearwater, SC | 4,060 | 46% | 4.2% |
| Lolo, MT | 4,064 | 40% | 16.7% |
| Livingston, TN | 4,058 | 30% | 37.5% |
| San Castle, FL | 4,061 | n/a |
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