Hackettstown High School is a four-year comprehensive public high school that serves students in ninth through twelfth grades from Hackettstown in Warren County, in the U.S. state of New Jersey, operating as the lone secondary school of the Hackettstown School District. Hackettstown High School serves students from Hackettstown, along with those from the townships of Allamuchy, Independence and Liberty, who attend as part of sending/receiving relationships.

Independence Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 5,469, a decrease of 193 (−3.4%) from the 2010 census count of 5,662, which in turn reflected an increase of 59 (+1.1%) from the 5,603 counted in the 2000 census.