| Index | Big Arm | Montana | National |
| Average Test Scores | n/a | 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 | Big Arm | Montana | National |
| Completed 8th grade | 83.5% | 89.4% | 84.3% |
| Completed high school | 77.9% | 88.2% | 83.0% |
| Completed some college | 57.0% | 63.1% | 59.4% |
| Completed associate degree | 30.5% | 38.6% | 38.5% |
| Completed bachelors | 30.5% | 29.9% | 30.3% |
| Completed masters | 0.0% | 9.8% | 11.5% |
| Completed professional degree | 0.0% | 3.0% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Big Arm. Using the proficiency score averages, the average test scores for Big Arm, MT schools is n/a. The average student to teacher ratio is n/a. In Big Arm, MT, an average of 83.5% of students have completed 8th grade and an average of 77.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dayton, MT | 111 | 45% | 6.3% |
| Polson, MT | 5,033 | 35% | 27.1% |
| Pablo, MT | 2,032 | 30% | 38.0% |
| Big Arm, MT | 89 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Jackson Junction, IA | 89 | 67% | 39.6% |
| Chuathbaluk, AK | 89 | 50% | 4.2% |
| Powhattan, KS | 89 | 20% | 58.3% |
| Lund, NV | 89 | 25% | 48.4% |
| Costilla, NM | 89 | 40% | 16.7% |
| Big Arm, MT | 89 | n/a |
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