Athletics
Plainfield High School now competes in the Union County Interscholastic Athletic Conference, following a reorganization of sports leagues in Northern New Jersey by the New Jersey State Interscholastic Athletic Association. Before the 2010 realignment, the school had competed in the Watchung Conference, a high school sports association that consists of public high schools covering Essex County, Hudson County and Union County.
Plainfield's football rivalry with Westfield High School dates back to 1900, making it the oldest active public high school football rivalry in the state.
The boys' basketball team claimed the 2011 and 2012 NJSIAA Group III state championships, the school's first state titles in basketball since 1983. The squad advanced to the NJISAA Tournament of Champions final; both times losing to national private school powerhouse St. Anthony's High School. Hall of Fame coach Bob Hurley called Plainfield, "the best basketball community in New Jersey." The team won the 2004 North II, Group IV state sectional championship, defeating Elizabeth High School 47-42 in the final.
Read more about this topic: Plainfield High School (New Jersey)