| Index | Gahanna | Ohio | National |
| Average Test Scores | 76% | 61% | 48% |
| Student/Teacher ratio | 14:1 | 17:1 | 16:1 |
| Total public schools | 10 | 3,650 | 79,221 |
| Total private schools | 6 | 1,000 | 24,874 |
| Total post-secondary schools | 1 | 393 | 7,963 |
| Index | Gahanna | Ohio | National |
| Completed 8th grade | 94.4% | 86.9% | 84.3% |
| Completed high school | 93.9% | 85.6% | 83.0% |
| Completed some college | 73.7% | 55.7% | 59.4% |
| Completed associate degree | 53.9% | 35.1% | 38.5% |
| Completed bachelors | 46.1% | 26.7% | 30.3% |
| Completed masters | 17.1% | 10.0% | 11.5% |
| Completed professional degree | 3.6% | 2.7% | 3.3% |
| Completed doctorate | 1.2% | 1.1% | 1.3% |
There are a total of 10 public schools, 6 private schools and 1 post-secondary schools in Gahanna. Using the proficiency score averages, the average test scores for Gahanna, OH schools is 76%. The average student to teacher ratio is 14:1. In Gahanna, OH, an average of 94.4% of students have completed 8th grade and an average of 93.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Galena, OH | 753 | 89% | 85.9% |
| Powell, OH | 13,353 | 88% | 82.9% |
| New Albany, OH | 11,085 | 87% | 81.3% |
| Upper Arlington, OH | 35,364 | 87% | 80.9% |
| Bexley, OH | 13,805 | 84% | 74.4% |
| Gahanna, OH | 35,442 | 76% | 58.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Eagle Mountain, UT | 35,431 | 43% | 11.1% |
| Richmond, IN | 35,467 | 32% | 34.4% |
| Oswego, IL | 35,470 | 37% | 23.2% |
| Wildwood, MO | 35,476 | 63% | 30.2% |
| Inver Grove Heights, MN | 35,492 | 54% | 12.4% |
| Gahanna, OH | 35,442 | 76% | 58.6% |
Here are the best places to live in Ohio
See the best places to live in Gahanna
Most Dangerous Cities In The US
These are the 10 cheapest cities in Ohio