Glen Rock High School is a four-year comprehensive public high school serving students in ninth through twelfth grades from Glen Rock, in Bergen County, New Jersey, United States, operating as the lone secondary school of the Glen Rock Public Schools. The school shares a campus with Glen Rock Middle School. As of the 2020–21 school year, the school had an enrollment of 720 students and 71.2 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.1:1. There were 6 students (0.8% of enrollment) eligible for free lunch and 2 (0.3% of students) eligible for reduced-cost lunch.