Juneau-Douglas High School (abbreviated JDHS) is one of three high schools in Juneau, Alaska. It is one of two primary high schools for the Juneau School District. The other main high school, Thunder Mountain High School, is roughly the same size, but primarily serves students from the Mendenhall Valley. JDHS has undergone extensive renovations, most notably to its main hall. As of the 2016-2017 school year, Paula Casperson is the principal.