| Index | Middletown | Delaware | National |
| Average Test Scores | 55% | 44% | 48% |
| Student/Teacher ratio | 20:1 | 16:1 | 16:1 |
| Total public schools | 8 | 191 | 79,221 |
| Total private schools | 3 | 129 | 24,874 |
| Total post-secondary schools | n/a | 20 | 7,963 |
| Index | Middletown | Delaware | National |
| Completed 8th grade | 92.5% | 86.3% | 84.3% |
| Completed high school | 91.8% | 85.3% | 83.0% |
| Completed some college | 67.6% | 57.7% | 59.4% |
| Completed associate degree | 45.7% | 38.2% | 38.5% |
| Completed bachelors | 36.8% | 30.5% | 30.3% |
| Completed masters | 15.9% | 12.4% | 11.5% |
| Completed professional degree | 3.1% | 3.5% | 3.3% |
| Completed doctorate | 1.3% | 1.7% | 1.3% |
There are a total of 8 public schools, 3 private schools and n/a post-secondary schools in Middletown. Using the proficiency score averages, the average test scores for Middletown, DE schools is 55%. The average student to teacher ratio is 20:1. In Middletown, DE, an average of 92.5% of students have completed 8th grade and an average of 91.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Townsend, DE | 2,546 | 60% | 25.0% |
| Odessa, DE | 352 | 56% | 16.7% |
| Charlestown, MD | 1,530 | 55% | 13.5% |
| Chesapeake City, MD | 725 | 52% | 8.7% |
| Clayton, DE | 3,393 | 51% | 7.0% |
| Middletown, DE | 22,350 | 55% | 15.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Garden City, NY | 22,384 | 83% | 73.2% |
| Patterson, CA | 22,309 | 31% | 35.7% |
| Waynesboro, VA | 22,300 | 71% | 47.3% |
| Prairie Village, KS | 22,255 | 66% | 37.3% |
| Watertown, SD | 22,249 | 59% | 22.5% |
| Middletown, DE | 22,350 | 55% | 15.1% |
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