The original school building was designed by architect Alexander Merchant. Opened in September 1926, the school was named Franklin Junior High School, serving students through tenth grade and constructed at a cost of $360,000 (equivalent to $ million in ). After appeals from residents, grades 11 and 12 were added and the building was renamed "
Highland Park High School" in 1937, before which students from Highland Park completed their secondary school education at either
New Brunswick High School or
Metuchen High School. The district had been classified by the
New Jersey Department of Education as being in
District Factor Group "GH", the third-highest of eight groupings. District Factor Groups organize districts statewide to allow comparison by common
socioeconomic characteristics of the local districts. From lowest socioeconomic status to highest, the categories are A, B, CD, DE, FG, GH, I and J. ==Schools==