| Index | St. Ignatius | Montana | National |
| Average Test Scores | 29% | 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 | St. Ignatius | Montana | National |
| Completed 8th grade | 84.4% | 89.4% | 84.3% |
| Completed high school | 83.1% | 88.2% | 83.0% |
| Completed some college | 55.8% | 63.1% | 59.4% |
| Completed associate degree | 25.6% | 38.6% | 38.5% |
| Completed bachelors | 18.0% | 29.9% | 30.3% |
| Completed masters | 5.6% | 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 St. Ignatius. Using the proficiency score averages, the average test scores for St. Ignatius, MT schools is 29%. The average student to teacher ratio is n/a. In St. Ignatius, MT, an average of 84.4% of students have completed 8th grade and an average of 83.1% 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% |
| Arlee, MT | 592 | 15% | 69.1% |
| St. Ignatius, MT | 785 | 29% | 39.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Jewett, TX | 785 | 48% | 1.0% |
| Ubly, MI | 785 | 46% | 4.7% |
| Aynor, SC | 785 | 64% | 32.6% |
| Greenville, CA | 785 | 24% | 50.5% |
| Minersville, UT | 785 | 55% | 14.1% |
| St. Ignatius, MT | 785 | 29% | 39.9% |
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