The Holderness School is a private, coeducational college-preparatory school in Holderness, near Plymouth, New Hampshire in the United States. The student body of 275 is drawn from 22 U.S. states and 14 foreign countries. While Holderness operates primarily as a boarding school, it also enrolls 50 day students. The Head of School is R. Phillip Peck, M.Ed. In the summer the campus is used as a site for various Gordon Research Conferences.