From the record
“Valier Public School, also known as Old School House, is a site on the National Register of Historic Places located in Valier, Montana. It was added to the Register on March 28, 1985.”
Wikipedia article Valier Public School, CC BY-SA 4.0.
One of 3 National Register listings published here for Pondera County · listed in 1985 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service