The Union County Magnet High School (UCMHS) is a magnet public high school located in Scotch Plains on the Union County Vocational Technical Schools Campus, serving the vocational and technical educational needs of students in ninth through twelfth grades throughout Union County, in the U.S. state of New Jersey. The school's goal is to prepare students for college/vocational training utilizing technology through problem solving, project-based learning, and interdisciplinary education. Students must apply to enter the school and the school accepts one-thirds of applicants. The school is accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1946.

Scotch Plains is a township in Union County, in the U.S. state of New Jersey. The township is located on a ridge in northern-central New Jersey, within the Raritan Valley and Rahway Valley regions in the New York metropolitan area. As of the 2020 United States census, the township's population was 24,968, an increase of 1,458 (+6.2%) from the 2010 census count of 23,510, which in turn reflected an increase of 778 (+3.4%) from the 22,732 counted in the 2000 census.