River Vale's public high school students attend Pascack Valley High School in Hillsdale, together with students from Hillsdale, as part of the Pascack Valley Regional High School District. During the 1994-96 school years, Northern Valley Regional High School at Demarest was awarded the Blue Ribbon School Award of Excellence by the United States Department of Education. As of the 2018–19 school year, the high school had an enrollment of 1,209 students and 92.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 13.1:1.