| Renville County West School Dist., MN (District) |
| Renwick, KS (District) |
| Reo Inc, MT (District) |
| Republic County, KS (District) |
| Republic County, KS (ISD) |
| Republic R-Iii, MO (District) |
| Republic School District, WA (District) |
| Republic-Michigamme Schools, MI (District) |
| Rescue Union Elementary, CA (District) |
| Research Based Education Corporation, AZ (District) |
| Research Triangle Charter, NC (District) |
| Reserve Public Schools, NM (District) |
| Responsive Ed Solutions Northwest Ark Classical Academy, AR (PSA) |
| Responsive Ed Solutions Premier High School Of Little Rock, AR (PSA) |
| Responsive Ed Solutions Quest Middle School Of Pine Bluff, AR (PSA) |
