| 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 | 420 | 55% | 14.1% |
| Marion, MT | 1,067 | 42% | 12.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Mountain View, WY | 1,067 | 57% | 17.7% |
| Plymouth, CA | 1,067 | 49% | 1.0% |
| Belmont, WI | 1,068 | 42% | 12.5% |
| Stromsburg, NE | 1,066 | 63% | 31.3% |
| Port Byron, NY | 1,066 | 43% | 10.9% |
| Marion, MT | 1,067 | 42% | 12.0% |