Complex sentence: High Point competes in the Northwest Jersey Athletic Conference a high school athletic conference located in Sussex County, Morris County and Warren County that operates under the auspices of the New Jersey State Interscholastic Athletic Association (NJSIAA), the statewide organization for high school sports.
Split into simpler sentences: High Point competes in the Northwest Jersey Athletic Conference a high school athletic conference located in Sussex County, Morris County and Warren County. The league operates under the auspices of the New Jersey State Interscholastic Athletic Association (NJSIAA), the statewide organization for high school sports.