| Index | Glen Ullin | 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 | Glen Ullin | North Dakota | National |
| Completed 8th grade | 89.8% | 90.7% | 84.3% |
| Completed high school | 78.9% | 88.3% | 83.0% |
| Completed some college | 41.9% | 64.6% | 59.4% |
| Completed associate degree | 19.6% | 41.6% | 38.5% |
| Completed bachelors | 13.3% | 28.2% | 30.3% |
| Completed masters | 4.3% | 7.7% | 11.5% |
| Completed professional degree | 1.2% | 2.4% | 3.3% |
| Completed doctorate | 1.2% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Glen Ullin. Using the proficiency score averages, the average test scores for Glen Ullin, ND schools is 50%. The average student to teacher ratio is n/a. In Glen Ullin, ND, an average of 89.8% of students have completed 8th grade and an average of 78.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hebron, ND | 806 | 63% | 30.2% |
| Glen Ullin, ND | 737 | 50% | 3.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Hardin, TX | 737 | 42% | 11.8% |
| Hanover, IL | 737 | 43% | 10.4% |
| Edgemont, SD | 737 | 42% | 12.0% |
| Chazy, NY | 737 | 67% | 39.6% |
| Addison, AL | 738 | 50% | 3.1% |
| Glen Ullin, ND | 737 | 50% | 3.6% |
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