| Index | St. Xavier | 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 |
| Index | St. Xavier | Montana | National |
| Completed 8th grade | 100.0% | 89.4% | 84.3% |
| Completed high school | 100.0% | 88.2% | 83.0% |
| Completed some college | 75.0% | 63.1% | 59.4% |
| Completed associate degree | 75.0% | 38.6% | 38.5% |
| Completed bachelors | 75.0% | 29.9% | 30.3% |
| Completed masters | 35.0% | 9.8% | 11.5% |
| Completed professional degree | 35.0% | 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. Xavier. Using the proficiency score averages, the average test scores for St. Xavier, MT schools is n/a. The average student to teacher ratio is n/a. In St. Xavier, MT, an average of 100.0% of students have completed 8th grade and an average of 100.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fort Smith, MT | 160 | 30% | 37.5% |
| Crow Agency, MT | 1,972 | 5% | 89.6% |
| St. Xavier, MT | 184 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| East Lynne, MO | 184 | 57% | 18.8% |
| Spokane, MO | 184 | 55% | 14.1% |
| Warba, MN | 184 | 50% | 4.2% |
| Bartlett, NH | 184 | 65% | 34.4% |
| Washta, IA | 183 | 67% | 39.6% |
| St. Xavier, MT | 184 | n/a |
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