| | | | | | | |
| Appoquinimink High School | C | 3 | 3 | Appoquinimink School District | New Castle | Public | |
| Archmere Academy | C | 2 | | Private School in Delaware | New Castle | Private | |
| Bayard School | A | 1 | | Christina | New Castle | Public | |
| Brandywine Springs School | B | 1 | | Red Clay Consolidated School District | New Castle | Public | |
| Cab Calloway School of the Arts | B | 1 | | Red Clay Consolidated School District | New Castle | Public | |
| Caravel | C | 1 | | private | New Castle | Private | |
| Caravel Academy | B | 2 | | Private | New Castle | Private | |
| Castle Hills Elementary School | A | 1 | 1 | Colonial School District | New Castle | Public | |
| Concord High School | C | 2 | | Brandywine School District | New Castle | Public | |
| Conrad Schools of Science | B | 1 | | Red Clay Consolidated School District | New Castle | Public | |
| Conrad Schools of Science | C | 1 | | Red Clay Consolidated School District | New Castle | Public | |
| Delaware Valley Classical School | C | 1 | | Private | New Castle | Private | |
| Delaware Valley Classical School | B | 1 | | Private | New Castle | Private | |
| Delcastle Technical High School | C | 3 | 3 | New Castle County Vocational Technical School District | New Castle | Public | |
| Dover High School | C | 1 | | Capital School District | Kent | Public | |
| First State Montessori Academy | B | 3 | | Charter School | New Castle | Charter | |
| Gallaher Elementary | A | 1 | | Christina School District | New Castle | Public | |
| Greenwood Mennonite School | B | 1 | 1 | Greenwood Mennonite | Sussex | Private | |
| Islamic Academy of Delaware | B | 1 | | Christina | New Castle | Private | |
| John R. Downes Elementary | A | 1 | | Christina Dchool District | United States | Public | |
| Las Americas ASPIRA Academy | B | 2 | 2 | Las Americas ASPIRA Academy | New Castle | Charter | |
| Leasure Elementary | A | 2 | | Christina School District | New Castle County | Public | |
| Linden Hill Elementary School | A | 2 | | Red Clay Consolidated School District | New Castle County | Public | |
| Maurice Prichett Academy (was Bancroft) | A | 1 | | Christina | United States | Public | |
| MOT Charter HS | C | 1 | | MOT Charter | New Castle | Charter | |
| Mt. Sophia Academy | C | 2 | 2 | Christina | New Castle | Private | |
| Newark Charter School High School | C | 2 | 2 | Newark Charter | New Castle | Charter | |
| North Star Elementary School | A | 1 | | Red Clay Consolidated School District | New Castle | Public | |
| Odessa High School | C | 1 | | Appoquinimink School District | New Castle | Public | |
| Odyssey Charter High School | C | 1 | | Odyssey Charter School | New Castle | Charter | |
| Odyssey Charter Middle School | B | 3 | | Odyssey Charter | New Castle | Charter | |
| P.S. duPont Middle School | B | 2 | | Brandywine School District | New Castle | Public | |
| R. Elisabeth Maclary Elementary School | A | 1 | | Christina | New Castle | Public | |
| Salesianum School | C | 2 | | Salesianum | New Castle | Private | |
| Springer Middle School | B | 2 | 2 | Brandywine School District | New Castle | Public | |
| Tarbiyah School | A | 1 | 1 | none | New Castle | Private | |
| Towle Insitute | B | 1 | | Christina School District | New Castle | Private | |
| Towle Insitute | C | 1 | | Christina School District | New Castle | Private | |
| West Park Elementary School | A | 2 | | Christina School District | New Castle | Public | |
| William Penn High School | C | 3 | | Colonial | New Castle | Public | |
| Wilmington Christian School | B | 1 | 1 | private | New Castle | Private | |
| Wilson Elementary School | A | 1 | | Christina School District | New Castle County | Public | |