| Index | Marion | Montana | National |
| Average Test Scores | 42% | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 408 | 79,221 |
| Total private schools | n/a | 77 | 24,874 |
| Total post-secondary schools | n/a | 32 | 7,963 |
| Index | Marion | Montana | National |
| Completed 8th grade | 92.4% | 89.4% | 84.3% |
| Completed high school | 91.9% | 88.2% | 83.0% |
| Completed some college | 47.7% | 63.1% | 59.4% |
| Completed associate degree | 19.5% | 38.6% | 38.5% |
| Completed bachelors | 13.4% | 29.9% | 30.3% |
| Completed masters | 3.6% | 9.8% | 11.5% |
| Completed professional degree | 0.4% | 3.0% | 3.3% |
| Completed doctorate | 0.4% | 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, MT schools is 42%. The average student to teacher ratio is n/a. In Marion, MT, an average of 92.4% of students have completed 8th grade and an average of 91.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Kila, MT | 411 | 55% | 14.1% |
| Marion, MT | 1,041 | 42% | 12.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Bessemer, PA | 1,041 | 66% | 36.8% |
| De Smet, SD | 1,041 | 61% | 26.4% |
| Cloverport, KY | 1,041 | 46% | 3.5% |
| Randolph, NY | 1,041 | 46% | 4.5% |
| Luttrell, TN | 1,041 | 22% | 54.2% |
| Marion, MT | 1,041 | 42% | 12.0% |
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