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, in the U.S. state of New Jersey, 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.

Lambertville is a city within Hunterdon County in the U.S. state of New Jersey. As of the 2020 United States census, the city's population was 4,139, an increase of 233 (+6.0%) from the 3,906 recorded at the 2010 census, which in turn reflected an increase of 38 (1.0%) from the 3,868 counted in the 2000 census.