| Index | Marion | South Carolina | National |
| Average Test Scores | 26% | 47% | 48% |
| Student/Teacher ratio | 16:1 | 16:1 | 16:1 |
| Total public schools | 6 | 932 | 79,221 |
| Total private schools | n/a | 369 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Marion | South Carolina | National |
| Completed 8th grade | 86.2% | 83.0% | 84.3% |
| Completed high school | 84.0% | 81.6% | 83.0% |
| Completed some college | 53.6% | 56.6% | 59.4% |
| Completed associate degree | 27.8% | 35.6% | 38.5% |
| Completed bachelors | 18.1% | 26.5% | 30.3% |
| Completed masters | 8.1% | 9.6% | 11.5% |
| Completed professional degree | 3.0% | 2.5% | 3.3% |
| Completed doctorate | 2.2% | 1.1% | 1.3% |
There are a total of 6 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, SC schools is 26%. The average student to teacher ratio is 16:1. In Marion, SC, an average of 86.2% of students have completed 8th grade and an average of 84.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Aynor, SC | 785 | 64% | 32.6% |
| Latta, SC | 1,627 | 50% | 3.1% |
| Pamplico, SC | 1,222 | 43% | 10.9% |
| Lake View, SC | 714 | 35% | 26.6% |
| Mullins, SC | 4,276 | 30% | 38.5% |
| Marion, SC | 6,598 | 26% | 46.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Torrington, WY | 6,597 | 49% | 2.4% |
| Bedford, VA | 6,599 | 76% | 58.3% |
| Anadarko, OK | 6,600 | 20% | 57.5% |
| Atlantic, IA | 6,600 | 69% | 43.0% |
| Pratt, KS | 6,595 | 35% | 26.7% |
| Marion, SC | 6,598 | 26% | 46.6% |
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