| Index | Hanahan | South Carolina | National |
| Average Test Scores | 58% | 47% | 48% |
| Student/Teacher ratio | 19:1 | 16:1 | 16:1 |
| Total public schools | 3 | 932 | 79,221 |
| Total private schools | 1 | 369 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Hanahan | South Carolina | National |
| Completed 8th grade | 87.3% | 83.0% | 84.3% |
| Completed high school | 86.1% | 81.6% | 83.0% |
| Completed some college | 62.2% | 56.6% | 59.4% |
| Completed associate degree | 40.8% | 35.6% | 38.5% |
| Completed bachelors | 28.6% | 26.5% | 30.3% |
| Completed masters | 8.1% | 9.6% | 11.5% |
| Completed professional degree | 1.1% | 2.5% | 3.3% |
| Completed doctorate | 0.6% | 1.1% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Hanahan. Using the proficiency score averages, the average test scores for Hanahan, SC schools is 58%. The average student to teacher ratio is 19:1. In Hanahan, SC, an average of 87.3% of students have completed 8th grade and an average of 86.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Mount Pleasant, SC | 91,527 | 78% | 62.2% |
| Sullivan's Island, SC | 2,226 | 76% | 57.3% |
| Summerville, SC | 55,185 | 60% | 25.5% |
| Goose Creek, SC | 44,214 | 48% | 0.2% |
| Charleston, SC | 142,427 | 48% | 0.6% |
| Hanahan, SC | 26,450 | 58% | 20.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Starkville, MS | 26,447 | 33% | 32.3% |
| Kankakee, IL | 26,461 | 22% | 54.5% |
| Sachse, TX | 26,435 | 63% | 30.7% |
| Asheboro, NC | 26,430 | 41% | 14.6% |
| Reedley, CA | 26,417 | 46% | 5.1% |
| Hanahan, SC | 26,450 | 58% | 20.8% |
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