| City Chs, PA (PSA) |
| City Day Community School, OH (PSA) |
| City Garden Montessori, MO (District) |
| City Of Baker School District, LA (District) |
| City Of Bogalusa School District, LA (District) |
| City of Chicago SD 299, IL (District) |
| City Of Erie Regional Career & Technical School, PA (District) |
| City Of Monroe School District, LA (District) |
| CITY OF VINELAND BOARD OF EDUCATION, NJ (District) |
| City On A Hill Charter Public (District), MA (District) |
| City View ISD, TX (District) |
| CKEC, KY (ISD) |
| Clackamas County, OR (ISD) |
| Clackamas Esd, OR (District) |
| Claflin, KS (District) |
