| Index | Old Agency | 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 |
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| Index | Old Agency | Montana | National |
| Completed 8th grade | 71.6% | 89.4% | 84.3% |
| Completed high school | 64.2% | 88.2% | 83.0% |
| Completed some college | 46.3% | 63.1% | 59.4% |
| Completed associate degree | 10.4% | 38.6% | 38.5% |
| Completed bachelors | 4.5% | 29.9% | 30.3% |
| Completed masters | 3.0% | 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 Old Agency. Using the proficiency score averages, the average test scores for Old Agency, MT schools is n/a. The average student to teacher ratio is n/a. In Old Agency, MT, an average of 71.6% of students have completed 8th grade and an average of 64.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Charlo, MT | 261 | 54% | 12.5% |
| Dixon, MT | 252 | 50% | 4.2% |
| Ronan, MT | 1,812 | 33% | 32.3% |
| St. Ignatius, MT | 785 | 29% | 39.9% |
| Arlee, MT | 592 | 15% | 69.1% |
| Old Agency, MT | 61 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Klukwan, AK | 61 | 50% | 4.2% |
| Crookston, NE | 61 | 30% | 37.5% |
| Yucca, AZ | 61 | 50% | 4.2% |
| St. Charles, VA | 61 | 83% | 71.9% |
| Menoken, ND | 61 | 60% | 25.0% |
| Old Agency, MT | 61 | n/a |
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