South Hunterdon Regional High School is a regional public high school serving students in seventh though twelfth grades from three communities in southern Hunterdon County, New Jersey, United States, as part of the South Hunterdon Regional School District. It has been the smallest public high school in the state. Students attend the school from Lambertville, Stockton and West Amwell Township. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1977.