| Index | Marion | Ohio | National |
| Average Test Scores | 50% | 61% | 48% |
| Student/Teacher ratio | 16:1 | 17:1 | 16:1 |
| Total public schools | 31 | 3,650 | 79,221 |
| Total private schools | 2 | 1,000 | 24,874 |
| Total post-secondary schools | 2 | 393 | 7,963 |
| Index | Marion | Ohio | National |
| Completed 8th grade | 74.4% | 86.9% | 84.3% |
| Completed high school | 72.8% | 85.6% | 83.0% |
| Completed some college | 38.7% | 55.7% | 59.4% |
| Completed associate degree | 15.6% | 35.1% | 38.5% |
| Completed bachelors | 9.4% | 26.7% | 30.3% |
| Completed masters | 3.6% | 10.0% | 11.5% |
| Completed professional degree | 0.5% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 31 public schools, 2 private schools and 2 post-secondary schools in Marion. Using the proficiency score averages, the average test scores for Marion, OH schools is 50%. The average student to teacher ratio is 16:1. In Marion, OH, an average of 74.4% of students have completed 8th grade and an average of 72.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Richwood, OH | 2,414 | 73% | 51.7% |
| Caledonia, OH | 665 | 73% | 51.7% |
| Ashley, OH | 1,672 | 67% | 39.6% |
| Bucyrus, OH | 11,808 | 59% | 21.9% |
| Cardington, OH | 1,571 | 51% | 6.5% |
| Marion, OH | 36,011 | 50% | 4.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Franklin, WI | 36,013 | 62% | 29.8% |
| San Juan Capistrano, CA | 35,976 | 44% | 8.0% |
| Lauderdale Lakes, FL | 36,063 | 41% | 13.9% |
| Panama City, FL | 35,952 | 50% | 4.6% |
| Manchester, CT | 35,946 | 37% | 22.3% |
| Marion, OH | 36,011 | 50% | 4.3% |
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