| Index | Delmar | Iowa | National |
| Average Test Scores | 82% | 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 | Delmar | Iowa | National |
| Completed 8th grade | 91.6% | 89.2% | 84.3% |
| Completed high school | 90.4% | 87.7% | 83.0% |
| Completed some college | 50.2% | 59.8% | 59.4% |
| Completed associate degree | 31.5% | 38.4% | 38.5% |
| Completed bachelors | 16.8% | 27.2% | 30.3% |
| Completed masters | 4.5% | 8.7% | 11.5% |
| Completed professional degree | 0.0% | 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 Delmar. Using the proficiency score averages, the average test scores for Delmar, IA schools is 82%. The average student to teacher ratio is n/a. In Delmar, IA, an average of 91.6% of students have completed 8th grade and an average of 90.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Wheatland, IA | 997 | 80% | 65.6% |
| Goose Lake, IA | 298 | 77% | 60.9% |
| DeWitt, IA | 5,215 | 76% | 57.8% |
| Andrew, IA | 448 | 70% | 45.3% |
| Calamus, IA | 366 | 70% | 44.8% |
| Delmar, IA | 491 | 82% | 70.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Walsh, CO | 491 | 50% | 4.2% |
| Roopville, GA | 491 | 60% | 24.0% |
| Prairie Farm, WI | 491 | 45% | 6.9% |
| Rome, PA | 491 | 53% | 10.9% |
| Sadler, TX | 490 | 51% | 6.3% |
| Delmar, IA | 491 | 82% | 70.8% |
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