| Rank | School District | Percentage with High School Diploma |
|---|---|---|
| 1 | Appoquinimink School District, Delaware | 93.2% |
| 2 | Brandywine School District, Delaware | 92.2% |
| 3 | Cape Henlopen School District, Delaware | 90.4% |
| 4 | Christina School District, Delaware | 89.0% |
| 5 | Red Clay Consolidated School District, Delaware | 88.5% |
| 6 | Caesar Rodney School District, Delaware | 87.9% |
| 7 | Milford School District, Delaware | 84.5% |
| 8 | Indian River School District, Delaware | 83.8% |
| 9 | Laurel School District, Delaware | 83.5% |
| 10 | Colonial School District, Delaware | 83.3% |
| 11 | Lake Forest School District, Delaware | 83.1% |
| 12 | Capital School District, Delaware | 82.8% |
| 13 | Delmar School District, Delaware | 82.4% |
| 14 | Seaford School District, Delaware | 82.2% |
| 15 | Smyrna School District, Delaware | 81.9% |
| 16 | Woodbridge School District, Delaware | 80.6% |
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