Poplar High School
 Poplar High School is a high school (grades 9–12) in the small town of Poplar Roosevelt County Montana.In 2007 it had 200 plus students and 25 teachers. Most if not all of the students are enrolled members of the Fort Peck Assiniboine and Sioux Reservation. Most of the racial makeup for the students are Native American mostly Sioux AssinibioneChippewa or Cree.