In 2014, Hopatcong and Hackettstown High School began partnering with Mount Olive High School on a co-operative boys' ice hockey team, which plays under the Mount Olive name. The boys' wrestling team won the 1997 North I Group II state sectional championship. In 2001 and 2005, the varsity football team was the North I, Group II state champions. In 2005, the team beat Sparta High School 20-14 in overtime in the final game of the tournament. During 2004, the varsity cross-country team became the North I, Group II state champions. In 2005, the boys' cross country team was 15th in the state at the New Jersey Meet of Champions. The same year, the team successfully defended its state sectional title and was second in Group II  The school's track team had three consecutive undefeated seasons, from 2010 to 2012. The school's principal is Emil Binotto.