| Rsu 84/Msad 14, ME (District) |
| Rsu 85/Msad 19, ME (District) |
| Rsu 86/Msad 20, ME (District) |
| Rsu 87/Msad 23, ME (District) |
| Rsu 88/Msad 24, ME (District) |
| Rtr Public Schools, MN (District) |
| Rubicon J6 School District, WI (District) |
| Rudd-Rockford-Marble Rk Comm School District, IA (District) |
| Rudyard Area Schools, MI (District) |
| Rugby 5, ND (District) |
| Ruidoso Municipal Schools, NM (District) |
| Rule ISD, TX (District) |
| Rum River Special Education Coop, MN (District) |
| Rumford-Region 9, ME (District) |
| Rumney School District, NH (District) |
