| Index | Denison | Iowa | National |
| Average Test Scores | 63% | 69% | 48% |
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 |
| Total public schools | 3 | 1,101 | 79,221 |
| Total private schools | 2 | 208 | 24,874 |
| Total post-secondary schools | 1 | 96 | 7,963 |
Why stop at city-to-city? With Local Insights, you can compare neighborhoods, zip codes, or even exact addresses. Access 300+ hyperlocal data points—from schools and crime to housing and amenities—to see which area is the better fit.
| Index | Denison | Iowa | National |
| Completed 8th grade | 65.1% | 89.2% | 84.3% |
| Completed high school | 62.1% | 87.7% | 83.0% |
| Completed some college | 35.4% | 59.8% | 59.4% |
| Completed associate degree | 18.2% | 38.4% | 38.5% |
| Completed bachelors | 10.7% | 27.2% | 30.3% |
| Completed masters | 2.4% | 8.7% | 11.5% |
| Completed professional degree | 0.9% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 3 public schools, 2 private schools and 1 post-secondary schools in Denison. Using the proficiency score averages, the average test scores for Denison, IA schools is 63%. The average student to teacher ratio is 14:1. In Denison, IA, an average of 65.1% of students have completed 8th grade and an average of 62.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Manning, IA | 1,550 | 76% | 57.8% |
| Dow City, IA | 440 | 75% | 55.2% |
| Schleswig, IA | 979 | 74% | 53.1% |
| Dunlap, IA | 1,214 | 70% | 44.8% |
| Westside, IA | 248 | 69% | 42.7% |
| Denison, IA | 8,319 | 63% | 31.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Athol, MA | 8,323 | 37% | 22.2% |
| Roxboro, NC | 8,323 | 42% | 12.3% |
| Hawthorn Woods, IL | 8,313 | 51% | 6.6% |
| Baxter, MN | 8,326 | 72% | 49.5% |
| Napoleon, OH | 8,310 | 74% | 53.6% |
| Denison, IA | 8,319 | 63% | 31.3% |
Here are the best places to live in Iowa
Check out the 10 most dangerous cities in Iowa
See the best places to live in Denison
Safest Cities In The US