| Index | Underwood | Iowa | National |
| Average Test Scores | 83% | 69% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Underwood | Iowa | National |
| Completed 8th grade | 96.6% | 89.2% | 84.3% |
| Completed high school | 95.6% | 87.7% | 83.0% |
| Completed some college | 68.3% | 59.8% | 59.4% |
| Completed associate degree | 48.0% | 38.4% | 38.5% |
| Completed bachelors | 32.7% | 27.2% | 30.3% |
| Completed masters | 8.8% | 8.7% | 11.5% |
| Completed professional degree | 2.0% | 2.7% | 3.3% |
| Completed doctorate | 0.4% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Underwood. Using the proficiency score averages, the average test scores for Underwood, IA schools is 83%. The average student to teacher ratio is n/a. In Underwood, IA, an average of 96.6% of students have completed 8th grade and an average of 95.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Treynor, IA | 942 | 86% | 79.9% |
| Carson, IA | 730 | 77% | 60.4% |
| Crescent, IA | 753 | 75% | 56.3% |
| Oakland, IA | 1,665 | 70% | 45.3% |
| Neola, IA | 1,055 | 66% | 38.2% |
| Underwood, IA | 955 | 83% | 72.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Greenwood, WI | 955 | 48% | 0.5% |
| Alexandria Bay, NY | 955 | 47% | 2.1% |
| Montezuma, IN | 955 | 38% | 20.8% |
| Elwood, KS | 955 | 25% | 49.0% |
| Raymond, IL | 955 | 27% | 43.4% |
| Underwood, IA | 955 | 83% | 72.9% |
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