Athletic Association (NJSIAA). Prior to the 2010 reorganization, the school had competed in the Watchung Conference, which consisted of public and private high schools in Essex, Hudson and Union counties. With 1,152 students in grades 10–12, the school was classified by the NJSIAA for the 2019–20 school year as Group IV for most athletic competition purposes, which included schools with an enrollment of 1,060 to 5,049 students in that grade range. The football team competes in Division 4 of the Big Central Football Conference, which includes 60 public and private high schools in Hunterdon, Middlesex, Somerset, Union and Warren counties, which are broken down into 10 divisions by size and location. The school was classified by the NJSIAA as Group IV North for football for 2018–2020. The school has a longstanding rivalry with Westfield High School, with the two schools first competing against each other in football in 1901. The boys spring track team won the Group IV state championship in 1963, 1964 and 1967, and won the Group III title in 1998 (as co-champion). The girls' tennis team won the North state championship in 1971 and 1972. The 1977 boys' baseball team finished the season with a record of 29-3 after winning the Group IV state championship by defeating Piscataway High School by a score of 1–0 in the final game of the tournament. The team won the Union County Tournament championship in 1969, 1976, 2004 and 2009. They also won the 2019 Union County Tournament, with a 4–0 win against Arthur L. Johnson High School in the finals. The boys' soccer team won the Group III state championship in 1986 (as co-champion with Randolph High School), 1987 (vs. Wall High School), 1989 (vs. Bridgewater-Raritan High School), 1991 (vs. Lacey Township High School), 1992 (vs. Wall Township High School), 1995 (as co-champion with Ocean City High School), 1997 (vs. Brick Memorial High School) and 1998 (vs. Delsea Regional High School). The football team won the North II Group III state championship in 1990 with a 25–12 win against West Morris Central High School in the tournament final, after coming back from a 12–0 deficit early in the first half. The Scotch Plains-Fanwood girls swim team won their first state championship title in 2005 and won again in 2006 and 2015. The Lady Raider Swimmers defeated Princeton High School 100–70 to win the 2015 Group B State championship. The Lady