River Dell High School is a four-year comprehensive regional public high school, part of the River Dell Regional School District, which is shared with the neighboring communities of Oradell and River Edge in Bergen County, in the U.S. state of New Jersey. Located in Oradell, River Dell High School has been a four-year high school since 1994, and is accredited by the New Jersey Department of Education. As of the 2022–23 school year, the school had an enrollment of 982 students and 89.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 11.0:1. There were 11 students (1.1% of enrollment) eligible for free lunch and 4 (0.4% of students) eligible for reduced-cost lunch. Source: Wikipedia (en)