Northern Valley Regional High School at Old Tappan is a comprehensive four-year public high school serving students in ninth through twelfth grades from the suburban communities of Harrington Park, Northvale, Norwood and Old Tappan in Bergen County, in the U.S. state of New Jersey. Students from Rockleigh attend the high school as part of a sending/receiving relationship. The school joins Northern Valley Regional High School at Demarest as the two secondary schools that are part of the Northern Valley Regional High School District, which also serves students from Closter, Demarest and Haworth.