| Index | Garrison | 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 | Garrison | Montana | National |
| Completed 8th grade | 88.7% | 89.4% | 84.3% |
| Completed high school | 88.7% | 88.2% | 83.0% |
| Completed some college | 52.8% | 63.1% | 59.4% |
| Completed associate degree | 26.4% | 38.6% | 38.5% |
| Completed bachelors | 18.9% | 29.9% | 30.3% |
| Completed masters | 11.3% | 9.8% | 11.5% |
| Completed professional degree | 3.8% | 3.0% | 3.3% |
| Completed doctorate | 3.8% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Garrison. Using the proficiency score averages, the average test scores for Garrison, MT schools is 50%. The average student to teacher ratio is n/a. In Garrison, MT, an average of 88.7% of students have completed 8th grade and an average of 88.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Avon, MT | 127 | 50% | 4.2% |
| Deer Lodge, MT | 2,893 | 45% | 6.9% |
| Garrison, MT | 88 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Smithville, OK | 88 | 35% | 27.4% |
| Golva, ND | 88 | 50% | 4.2% |
| Nondalton, AK | 88 | 50% | 4.2% |
| Warwick, ND | 88 | 16% | 67.7% |
| Jackson Junction, IA | 89 | 67% | 39.6% |
| Garrison, MT | 88 | 50% | 4.2% |
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