| Index | Darby | Montana | National |
| Average Test Scores | 24% | 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 | Darby | Montana | National |
| Completed 8th grade | 77.7% | 89.4% | 84.3% |
| Completed high school | 77.0% | 88.2% | 83.0% |
| Completed some college | 45.5% | 63.1% | 59.4% |
| Completed associate degree | 21.4% | 38.6% | 38.5% |
| Completed bachelors | 12.5% | 29.9% | 30.3% |
| Completed masters | 4.2% | 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 Darby. Using the proficiency score averages, the average test scores for Darby, MT schools is 24%. The average student to teacher ratio is n/a. In Darby, MT, an average of 77.7% of students have completed 8th grade and an average of 77.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Darby, MT | 685 | 24% | 50.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Sycamore Hills, MO | 685 | 29% | 40.6% |
| Mott, ND | 685 | 37% | 22.4% |
| Chrisney, IN | 684 | 72% | 50.0% |
| Eastover, SC | 686 | 30% | 38.5% |
| Blythe, GA | 686 | 42% | 12.5% |
| Darby, MT | 685 | 24% | 50.0% |
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