Phillipsburg High School is a comprehensive, four-year public high school located in Phillipsburg, in Warren County, in the U.S. state of New Jersey. Because of the town's proximity to the border between New Jersey and Pennsylvania the school's nickname is the "Stateliners." The school was first established in 1871. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 2000.

Phillipsburg is a town located along the Delaware River that is the most populous municipality in Warren County, in the U.S. state of New Jersey. It is part of the Allentown-Bethlehem-Easton, PA-NJ metropolitan statistical area. As of the 2020 United States census, the town's population was 15,249, an increase of 299 (+2.0%) from the 2010 census count of 14,950, which in turn reflected a decline of 216 (−1.4%) from the 15,166 counted in the 2000 census.