| Index | St. Thomas | North Dakota | National |
| Average Test Scores | 50% | 44% | 48% |
| Student/Teacher ratio | n/a | 12:1 | 16:1 |
| Total public schools | n/a | 272 | 79,221 |
| Total private schools | n/a | 47 | 24,874 |
| Total post-secondary schools | n/a | 30 | 7,963 |
| Index | St. Thomas | North Dakota | National |
| Completed 8th grade | 79.4% | 90.7% | 84.3% |
| Completed high school | 77.8% | 88.3% | 83.0% |
| Completed some college | 49.4% | 64.6% | 59.4% |
| Completed associate degree | 30.9% | 41.6% | 38.5% |
| Completed bachelors | 18.9% | 28.2% | 30.3% |
| Completed masters | 4.5% | 7.7% | 11.5% |
| Completed professional degree | 1.6% | 2.4% | 3.3% |
| Completed doctorate | 1.6% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in St. Thomas. Using the proficiency score averages, the average test scores for St. Thomas, ND schools is 50%. The average student to teacher ratio is n/a. In St. Thomas, ND, an average of 79.4% of students have completed 8th grade and an average of 77.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hoople, ND | 265 | 60% | 25.0% |
| Crystal, ND | 94 | 55% | 14.6% |
| Cavalier, ND | 1,328 | 46% | 4.7% |
| Drayton, ND | 803 | 44% | 9.4% |
| Grafton, ND | 4,139 | 37% | 23.6% |
| St. Thomas, ND | 340 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Scranton, ND | 340 | 65% | 35.4% |
| Little Mountain, SC | 340 | 61% | 27.1% |
| Harrisburg, MO | 340 | 39% | 19.1% |
| Winthrop, WA | 340 | 57% | 19.3% |
| St. Marks, FL | 340 | 32% | 33.3% |
| St. Thomas, ND | 340 | 50% | 4.2% |
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