| Business | Phone |
| Elementary School 500 W Community Dr, Flandreau 57028 | (605) 997-2780 |
| Flandreau High School 600 W Community Dr, Flandreau 57028 | (605) 997-2455 |
| Flandreau Indian High School 1005 Mountain Chief Dr, Flandreau 57028 | (605) 997-3773 |
| Flandreau Middle School 600 W 1st Ave, Flandreau 57028 | (605) 997-2705 |
| Flandreau Superintendent Ofc 600 W 1st Ave, Flandreau 57028 | (605) 997-3263 |