| Capital City Career Prep High School, OH (PSA) |
| Capital City Lighthouse Academy, AR (PSA) |
| Capital Collegiate Preparatory Academy, OH (PSA) |
| Capital High School, OH (PSA) |
| Capital Prep (Cp) Harlem Charter, NY (PSA) |
| Capital Prep (Cp) Harlem Cs, NY (PSA) |
| Capital Prep-Bronx, NY (PSA) |
| Capital Preparatory Harbor School Inc. District, CT (District) |
| Capital Region Boces, NY (ISD) |
| Capital School District, DE (District) |
| Capitan Municipal Schools, NM (District) |
| Capitol Area Academy, MI (PSA) |
| Capitol Region Education Council, CT (District) |
| Capitol West Academy Agency, WI (PSA) |
| Capstone Classical Academy, UT (PSA) |
