| Index | Lancaster | Ohio | National |
| Average Test Scores | 61% | 61% | 48% |
| Student/Teacher ratio | 19:1 | 17:1 | 16:1 |
| Total public schools | 16 | 3,650 | 79,221 |
| Total private schools | 8 | 1,000 | 24,874 |
| Total post-secondary schools | 1 | 393 | 7,963 |
| Index | Lancaster | Ohio | National |
| Completed 8th grade | 84.3% | 86.9% | 84.3% |
| Completed high school | 83.2% | 85.6% | 83.0% |
| Completed some college | 48.1% | 55.7% | 59.4% |
| Completed associate degree | 26.1% | 35.1% | 38.5% |
| Completed bachelors | 16.5% | 26.7% | 30.3% |
| Completed masters | 5.3% | 10.0% | 11.5% |
| Completed professional degree | 1.2% | 2.7% | 3.3% |
| Completed doctorate | 0.4% | 1.1% | 1.3% |
There are a total of 16 public schools, 8 private schools and 1 post-secondary schools in Lancaster. Using the proficiency score averages, the average test scores for Lancaster, OH schools is 61%. The average student to teacher ratio is 19:1. In Lancaster, OH, an average of 84.3% of students have completed 8th grade and an average of 83.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Bremen, OH | 1,826 | 80% | 65.2% |
| Pleasantville, OH | 1,206 | 80% | 65.2% |
| Carroll, OH | 381 | 76% | 57.9% |
| Logan, OH | 7,205 | 76% | 56.9% |
| Pickerington, OH | 19,379 | 75% | 56.5% |
| Lancaster, OH | 39,483 | 61% | 27.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Clovis, NM | 39,461 | 29% | 39.8% |
| Marlborough, MA | 39,545 | 50% | 3.8% |
| Bremerton, WA | 39,388 | 51% | 6.6% |
| Duncanville, TX | 39,599 | 37% | 22.3% |
| Hilton Head Island, SC | 39,651 | 57% | 17.9% |
| Lancaster, OH | 39,483 | 61% | 27.7% |
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