| Index | Marion | South Dakota | National |
| Average Test Scores | 52% | 48% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Marion | South Dakota | National |
| Completed 8th grade | 92.8% | 89.1% | 84.3% |
| Completed high school | 86.3% | 86.8% | 83.0% |
| Completed some college | 59.4% | 60.4% | 59.4% |
| Completed associate degree | 31.0% | 38.5% | 38.5% |
| Completed bachelors | 17.0% | 27.5% | 30.3% |
| Completed masters | 3.6% | 8.1% | 11.5% |
| Completed professional degree | 0.5% | 2.5% | 3.3% |
| Completed doctorate | 0.5% | 1.2% | 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, SD schools is 52%. The average student to teacher ratio is n/a. In Marion, SD, an average of 92.8% of students have completed 8th grade and an average of 86.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Bridgewater, SD | 330 | 70% | 44.8% |
| Canistota, SD | 688 | 66% | 37.2% |
| Freeman, SD | 1,687 | 62% | 29.9% |
| Parker, SD | 900 | 57% | 19.1% |
| Hurley, SD | 424 | 35% | 28.1% |
| Marion, SD | 933 | 52% | 7.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Groveton, NH | 933 | 34% | 29.2% |
| Mars Hill, ME | 933 | 37% | 22.9% |
| Togiak, AK | 933 | 5% | 89.6% |
| Liberty, MS | 933 | 17% | 65.6% |
| Altus, AR | 933 | 55% | 13.5% |
| Marion, SD | 933 | 52% | 7.6% |
Here are the best places to live in South Dakota
Check out the 10 safest cities in South Dakota
Check out the 10 most dangerous cities in South Dakota
These are the 10 cheapest cities in South Dakota