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.

[11] At its establishment, the school served students from Harrington Park, Northvale, Norwood and Old Tappan, as well as those from the northern portion of Closter.

[2] The Northern Valley Regional High School at Old Tappan Golden Knights[2] compete in the Big North Conference, which is comprised of public and private high schools in Bergen and Passaic counties and was established following a reorganization of sports leagues in Northern New Jersey by the New Jersey State Interscholastic Athletic Association.

Cheerleading is both a fall and winter sport, and it includes after school gymnastic classes, competitions, and cheer camp.

[34] The 1983 team won the Group III title for the second consecutive year, defeating Ramsey in the final match of the tournament in three games (15-12, 8-15 and 15-11).

[37] The 1990 team finished the season with a record of 25–1 after winning the Group II title by defeating Pascack Valley in two games (15-3, 15-13) in the tournament final.

[44] The 2017 football team finished undefeated, with a 12–0 record, capping off the season with a 31–28 win at MetLife Stadium against third-seeded Mount Olive High School in the final game of the North I Group IV state sectional tournament.

[47] The boys' basketball team won the 2006 North I, Group III tournament, defeating West Milford High School by a final score of 56–54.

In 2022, the team won the program's second Bergen County championship with a 9–7 win against defending champion Saint Joseph Regional High School.

[57] The boys' cross country team won the 2011 and 2012 league and county championships, as well as the North 1, Group III state sectional titles.

[60] The 2007 team won the North I, Group III sectional championship, topping Teaneck High School 56–48 in the final game.

This high school offers over 60 clubs for all students, providing diverse opportunities to explore their interests and talents.

These clubs span various areas, including academic enrichment, sports, arts, culture, social justice and community involvement.