| 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 |


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| 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 | 2,642 | 60% | 25.0% |
| Odessa, DE | 366 | 56% | 16.7% |
| Charlestown, MD | 1,590 | 55% | 13.5% |
| Chesapeake City, MD | 742 | 52% | 8.7% |
| Clayton, DE | 3,485 | 51% | 7.0% |
| Middletown, DE | 23,057 | 55% | 15.1% |
| City | Population | Avg. Test Scores | National Avg. |
| South Lake Tahoe, CA | 23,049 | 37% | 22.6% |
| Cockeysville, MD | 23,095 | 41% | 14.2% |
| Munster, IN | 23,103 | 70% | 46.0% |
| Waynesboro, VA | 23,002 | 71% | 47.3% |
| Hudson, OH | 22,996 | 89% | 85.7% |
| Middletown, DE | 23,057 | 55% | 15.1% |