Concho Indian Boarding School

Concho Indian Boarding School (also known as the Cheyenne-Arapaho Boarding School at Concho or Concho Indian School and home to the Concho Demonstration School) was a boarding school for members of the Cheyenne and Arapaho Tribes. It initially served grades 1–6, and later extended classes through grade 8. Admission was later opened to other Native American students.

It operated from 1909 to 1983 in central Oklahoma, approximately one mile south of Concho, Oklahoma, and four miles north of El Reno, Oklahoma. The name of the town and school is the Spanish word for "shell"; it was named for the United States Indian agent, Charles E. Shell, who was assigned to the Cheyenne and Araphaho Reservation.