| Index | Delaware | Iowa | National |
| Average Test Scores | n/a | 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 | Delaware | Iowa | National |
| Completed 8th grade | 90.7% | 89.2% | 84.3% |
| Completed high school | 90.7% | 87.7% | 83.0% |
| Completed some college | 45.4% | 59.8% | 59.4% |
| Completed associate degree | 31.5% | 38.4% | 38.5% |
| Completed bachelors | 15.7% | 27.2% | 30.3% |
| Completed masters | 6.5% | 8.7% | 11.5% |
| Completed professional degree | 5.6% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Delaware. Using the proficiency score averages, the average test scores for Delaware, IA schools is n/a. The average student to teacher ratio is n/a. In Delaware, IA, an average of 90.7% of students have completed 8th grade and an average of 90.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Delhi, IA | 458 | 90% | 86.8% |
| Coggon, IA | 743 | 78% | 62.5% |
| Manchester, IA | 5,011 | 77% | 59.7% |
| Dyersville, IA | 4,131 | 75% | 55.2% |
| Colesburg, IA | 522 | 65% | 34.4% |
| Delaware, IA | 144 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Gail, TX | 144 | 65% | 34.4% |
| Westbrook, TX | 144 | 50% | 3.1% |
| Le Flore, OK | 144 | 30% | 38.0% |
| Grand Marsh, WI | 144 | 40% | 16.7% |
| Kahlotus, WA | 144 | 40% | 16.7% |
| Delaware, IA | 144 | n/a |
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