North Warren Regional High School

North Warren Regional High School is a public high school and regional school district, located in Warren County, in the U.S. state of New Jersey, that serves students in seventh grade through twelfth grade from the four constituent townships of Blairstown (where the school is located), Frelinghuysen, Hardwick and Knowlton. It is the only school in the North Warren Regional School District. The school opened in September 1970, replacing the former Blairstown High School. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1984; the school is accredited with stipulations until July 2031. The high school is the lone facility of the North Warren Regional High School District.

As of the 2023–24 school year, the school had an enrollment of 619 students and 54.8 classroom teachers (on an FTE basis), for a student–teacher ratio of 11.3:1. There were 52 students (8.4% of enrollment) eligible for free lunch and 13 (2.1% of students) eligible for reduced-cost lunch.

The district had been classified by the New Jersey Department of Education as being in District Factor Group "FG", the fourth-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.