Complex sentence: The Edison High School Eagles compete in the Greater Middlesex Conference, made up of public and private high schools located in the Middlesex County area and operating under the supervision of the New Jersey State Interscholastic Athletic Association.
Split into simpler sentences: The Edison High School Eagles compete in the Greater Middlesex Conference, made up of public and private high schools located in the greater Middlesex County area. The league operates under the supervision of the New Jersey State Interscholastic Athletic Association.