St. Joseph's Indian School is an American Indian boarding school, run by the Congregation of the Priests of the Sacred Heart just outside the city of Chamberlain, South Dakota, on the east side of the Missouri River. The school is located in the Roman Catholic Diocese of Sioux Falls, but it is operated by a religious institute of pontifical right that is independent of the diocese. The school is within two hours of three reservations of the Lakota people: the Cheyenne River Indian Reservation, the Lower Brule Indian Reservation and the Crow Creek Indian Reservation, whose children comprise the majority of students at the school. The Akta Lakota Museum and Cultural Center is located on the campus and is owned by the school.