| Calhoun ISD, MI (ISD) |
| Calhoun R-Viii, MO (District) |
| Calibre Academy, AZ (District) |
| Calico Rock School District, AR (District) |
| Caliente Union Elementary, CA (District) |
| Califon School District, NJ (District) |
| California Academy of Learning CS, PA (PSA) |
| California Advancing Pathways for Students in Los Angeles County ROC/P, CA (District) |
| California Area SD, PA (District) |
| California Department of Education, CA (State) |
| California Education Authority Headquarters, CA (District) |
| California School for the Blind, CA (District) |
| California School for the Deaf-Fremont, CA (District) |
| California School for the Deaf-Riverside, CA (District) |
| Calipatria Unified, CA (District) |
