| Index | Westerville | Ohio | National |
| Average Test Scores | 73% | 61% | 48% |
| Student/Teacher ratio | 18:1 | 17:1 | 16:1 |
| Total public schools | 23 | 3,650 | 79,221 |
| Total private schools | 11 | 1,000 | 24,874 |
| Total post-secondary schools | 4 | 393 | 7,963 |
| Index | Westerville | Ohio | National |
| Completed 8th grade | 96.8% | 86.9% | 84.3% |
| Completed high school | 96.1% | 85.6% | 83.0% |
| Completed some college | 76.4% | 55.7% | 59.4% |
| Completed associate degree | 59.2% | 35.1% | 38.5% |
| Completed bachelors | 52.5% | 26.7% | 30.3% |
| Completed masters | 19.5% | 10.0% | 11.5% |
| Completed professional degree | 5.1% | 2.7% | 3.3% |
| Completed doctorate | 2.4% | 1.1% | 1.3% |
There are a total of 23 public schools, 11 private schools and 4 post-secondary schools in Westerville. Using the proficiency score averages, the average test scores for Westerville, OH schools is 73%. The average student to teacher ratio is 18:1. In Westerville, OH, an average of 96.8% of students have completed 8th grade and an average of 96.1% 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% |
| Westerville, OH | 40,443 | 73% | 51.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Lancaster, OH | 40,438 | 61% | 28.0% |
| Huber Heights, OH | 40,465 | 56% | 16.8% |
| Covington, KY | 40,466 | 41% | 14.1% |
| Wentzville, MO | 40,407 | 58% | 20.1% |
| Fitchburg, MA | 40,576 | 39% | 18.8% |
| Westerville, OH | 40,443 | 73% | 51.2% |
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