| Index | Twin Brooks | South Dakota | National |
| Average Test Scores | n/a | 48% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Twin Brooks | South Dakota | National |
| Completed 8th grade | 81.8% | 89.1% | 84.3% |
| Completed high school | 72.7% | 86.8% | 83.0% |
| Completed some college | 29.5% | 60.4% | 59.4% |
| Completed associate degree | 13.6% | 38.5% | 38.5% |
| Completed bachelors | 2.3% | 27.5% | 30.3% |
| Completed masters | 0.0% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.5% | 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 Twin Brooks. Using the proficiency score averages, the average test scores for Twin Brooks, SD schools is n/a. The average student to teacher ratio is n/a. In Twin Brooks, SD, an average of 81.8% of students have completed 8th grade and an average of 72.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Milbank, SD | 3,137 | 51% | 6.3% |
| Summit, SD | 339 | 47% | 1.6% |
| Wilmot, SD | 554 | 37% | 22.2% |
| Waverly, SD | 51 | 32% | 34.0% |
| Twin Brooks, SD | 44 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Seven Springs, NC | 44 | 35% | 27.6% |
| Crestone, CO | 44 | 18% | 63.5% |
| Iliamna, AK | 43 | 20% | 58.3% |
| Hamer, ID | 45 | 50% | 4.2% |
| Chignik, AK | 42 | 50% | 4.2% |
| Twin Brooks, SD | 44 | n/a |
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