| Index | New Underwood | South Dakota | National |
| Average Test Scores | 55% | 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 | New Underwood | South Dakota | National |
| Completed 8th grade | 89.9% | 89.1% | 84.3% |
| Completed high school | 89.9% | 86.8% | 83.0% |
| Completed some college | 58.1% | 60.4% | 59.4% |
| Completed associate degree | 26.3% | 38.5% | 38.5% |
| Completed bachelors | 20.4% | 27.5% | 30.3% |
| Completed masters | 3.7% | 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 New Underwood. Using the proficiency score averages, the average test scores for New Underwood, SD schools is 55%. The average student to teacher ratio is n/a. In New Underwood, SD, an average of 89.9% of students have completed 8th grade and an average of 89.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Box Elder, SD | 9,937 | 54% | 11.7% |
| New Underwood, SD | 758 | 55% | 14.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Arco, ID | 758 | 43% | 9.9% |
| Hamlet, IN | 758 | 35% | 28.1% |
| Galena, MD | 758 | 20% | 59.4% |
| Boswell, IN | 758 | 25% | 49.0% |
| Oljato-Monument Valley, UT | 758 | 9% | 80.7% |
| New Underwood, SD | 758 | 55% | 14.2% |
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