| Keys Grace Academy, MI (PSA) |
| Keystone, OK (District) |
| Keystone Academy, MI (PSA) |
| Keystone Aea, IA (District) |
| Keystone Central Ctc, PA (District) |
| Keystone Central SD, PA (District) |
| Keystone Central SD, PA (District) |
| Keystone Education Center Cs, PA (PSA) |
| Keystone Local School District, OH (District) |
| Keystone Montessori Charter School Inc., AZ (PSA) |
| Keystone Oaks SD, PA (District) |
| Keystone Sd, PA (District) |
| Keytesville R-Iii, MO (District) |
| Khalsa Family Services, AZ (District) |
| Khalsa Montessori Elementary Schools, AZ (District) |
