| Index | Decorah | Iowa | National |
| Average Test Scores | 81% | 69% | 48% |
| Student/Teacher ratio | 12:1 | 13:1 | 16:1 |
| Total public schools | 6 | 1,101 | 79,221 |
| Total private schools | 1 | 208 | 24,874 |
| Total post-secondary schools | 1 | 96 | 7,963 |
| Index | Decorah | Iowa | National |
| Completed 8th grade | 93.7% | 89.2% | 84.3% |
| Completed high school | 93.1% | 87.7% | 83.0% |
| Completed some college | 69.0% | 59.8% | 59.4% |
| Completed associate degree | 51.6% | 38.4% | 38.5% |
| Completed bachelors | 41.6% | 27.2% | 30.3% |
| Completed masters | 16.9% | 8.7% | 11.5% |
| Completed professional degree | 7.0% | 2.7% | 3.3% |
| Completed doctorate | 5.7% | 1.1% | 1.3% |
There are a total of 6 public schools, 1 private schools and 1 post-secondary schools in Decorah. Using the proficiency score averages, the average test scores for Decorah, IA schools is 81%. The average student to teacher ratio is 12:1. In Decorah, IA, an average of 93.7% of students have completed 8th grade and an average of 93.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Calmar, IA | 989 | 80% | 66.7% |
| Ossian, IA | 798 | 75% | 55.2% |
| Jackson Junction, IA | 89 | 67% | 39.6% |
| Decorah, IA | 7,615 | 81% | 68.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Pulaski, TN | 7,614 | 30% | 37.5% |
| Rhinelander, WI | 7,617 | 35% | 26.9% |
| Ojai, CA | 7,613 | 35% | 27.5% |
| Hales Corners, WI | 7,609 | 58% | 21.4% |
| Chehalis, WA | 7,607 | 55% | 14.3% |
| Decorah, IA | 7,615 | 81% | 68.5% |
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