| Index | Milbank | South Dakota | National |
| Average Test Scores | 51% | 48% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 3 | 340 | 79,221 |
| Total private schools | 1 | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Milbank | South Dakota | National |
| Completed 8th grade | 89.2% | 89.1% | 84.3% |
| Completed high school | 83.7% | 86.8% | 83.0% |
| Completed some college | 46.5% | 60.4% | 59.4% |
| Completed associate degree | 23.1% | 38.5% | 38.5% |
| Completed bachelors | 12.4% | 27.5% | 30.3% |
| Completed masters | 1.6% | 8.1% | 11.5% |
| Completed professional degree | 0.5% | 2.5% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Milbank. Using the proficiency score averages, the average test scores for Milbank, SD schools is 51%. The average student to teacher ratio is 15:1. In Milbank, SD, an average of 89.2% of students have completed 8th grade and an average of 83.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Big Stone City, SD | 665 | 68% | 40.6% |
| Ortonville, MN | 2,017 | 55% | 13.5% |
| Wilmot, SD | 554 | 37% | 22.2% |
| Milbank, SD | 3,137 | 51% | 6.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Zillah, WA | 3,137 | 57% | 19.5% |
| Mamou, LA | 3,137 | 77% | 59.9% |
| Knoxville, IL | 3,137 | 25% | 47.2% |
| Elgin, OK | 3,137 | 38% | 20.8% |
| Cleveland, OK | 3,138 | 27% | 43.8% |
| Milbank, SD | 3,137 | 51% | 6.3% |
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