 Prior to realignment that took effect in the fall of 2010, Cresskill was a member of the Bergen County Scholastic League (BCSL) in the Olympic Division.The school participates in a joint ice hockey program with Tenafly High School as the host school / lead agency, under an agreement that expires at the end of the 2017–18 school year.The football team won the NJSIAA North I Group I state sectional championship in 1984, 1987, 1989, 1992 and 1997.