The
Idaho Statesman counted the start of the school as 1867, when the first school in Weiser was established. In 1904, a dedicated building for the high school was built for $40,000. Renovation and expansion worth $90,000 began to be built in 1919. In 1948 it took over the former Weiser Academy/Intermountain Institute, a
boarding school with of land. According to
The Idaho Statesman, this meant that it was the sole high school in the state with a large property. In 1958, there were 46 students at Weiser High who lived in the Annex and Jefferson school districts. In 1965 there was a proposal for a bond to spend $1,147,000 to build a new high school, using a hexagon-style design. That year, the state was considering pulling the accreditation of the school. ==Operations==