Complex sentence: The conference participates in the National Collegiate Athletic Association's (NCAA) Division III. Case Institute of Technology and Western Reserve University were also a founding members of the Presidents' Athletic Conference (PAC) in 1958.
Split into simpler sentences: The conference participates in the National Collegiate Athletic Association's (NCAA) Division III (PAC). The Case Institute of Technology and Western Reserve University were also a founding members of the Presidents' Athletic Conference in 1958.