| Index | Marion | Pennsylvania | National |
| Average Test Scores | n/a | 55% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 2,563 | 79,221 |
| Total private schools | n/a | 1,626 | 24,874 |
| Total post-secondary schools | n/a | 406 | 7,963 |
| Index | Marion | Pennsylvania | National |
| Completed 8th grade | 79.9% | 86.9% | 84.3% |
| Completed high school | 79.9% | 85.6% | 83.0% |
| Completed some college | 41.2% | 53.6% | 59.4% |
| Completed associate degree | 30.3% | 37.4% | 38.5% |
| Completed bachelors | 27.0% | 29.3% | 30.3% |
| Completed masters | 3.6% | 11.5% | 11.5% |
| Completed professional degree | 0.0% | 3.3% | 3.3% |
| Completed doctorate | 0.0% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Marion. Using the proficiency score averages, the average test scores for Marion, PA schools is n/a. The average student to teacher ratio is n/a. In Marion, PA, an average of 79.9% of students have completed 8th grade and an average of 79.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Greencastle, PA | 4,088 | 69% | 44.4% |
| Sabillasville, MD | 403 | 65% | 35.4% |
| Fayetteville, PA | 2,938 | 64% | 32.3% |
| Shippensburg, PA | 5,760 | 62% | 29.9% |
| Mercersburg, PA | 1,737 | 62% | 29.0% |
| Marion, PA | 1,596 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Milan, OH | 1,596 | 72% | 50.0% |
| Medicine Lodge, KS | 1,596 | 30% | 38.5% |
| Farwell, TX | 1,596 | 49% | 1.7% |
| Bokeelia, FL | 1,596 | 72% | 50.0% |
| Bristol, IN | 1,595 | 44% | 7.8% |
| Marion, PA | 1,596 | n/a |
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