| Index | Sun River | Montana | National |
| Average Test Scores | 50% | 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 | Sun River | Montana | National |
| Completed 8th grade | 57.4% | 89.4% | 84.3% |
| Completed high school | 57.4% | 88.2% | 83.0% |
| Completed some college | 22.1% | 63.1% | 59.4% |
| Completed associate degree | 7.4% | 38.6% | 38.5% |
| Completed bachelors | 7.4% | 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 Sun River. Using the proficiency score averages, the average test scores for Sun River, MT schools is 50%. The average student to teacher ratio is n/a. In Sun River, MT, an average of 57.4% of students have completed 8th grade and an average of 57.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fairfield, MT | 690 | 66% | 37.0% |
| Power, MT | 153 | 53% | 9.4% |
| Fort Shaw, MT | 138 | 45% | 6.3% |
| Ulm, MT | 750 | 38% | 20.1% |
| Simms, MT | 338 | 35% | 27.1% |
| Sun River, MT | 41 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Tatitlek, AK | 41 | 50% | 4.2% |
| Avilla, MO | 41 | 35% | 28.1% |
| Lewiston, NE | 40 | 48% | 1.0% |
| Addy, WA | 40 | 45% | 6.3% |
| California Hot Springs, CA | 40 | 50% | 4.2% |
| Sun River, MT | 41 | 50% | 4.2% |
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