Westfield Senior High School (WHS, or Westfield High School) is a comprehensive public high school located in Westfield, in Union County, New Jersey, United States, serving students in ninth through twelfth grades as the lone secondary school of the Westfield Public Schools. It was established in the early 1900s at its original location on Elm Street until 1951 when it was moved to its current location on Dorian Road. The new wing designated for biology, chemistry, physics, and other sciences, along with English as a Second Language was completed in 2002. Westfield High School is overseen by the New Jersey Department of Education and has been accredited by the Middle States Association of Colleges and Schools Commission on Secondary Schools since 1928.