FILE – In this May 5, 2017, file photo, Jim and Evelyn Piazza, center, stand by as Centre County, Pa., prosecutors discuss an investigation into the death of their son Timothy Piazza, seen in photo at right, during a news conference in Bellefonte, Pa. Penn State's board of trustees approved changes to the university's Greek system Friday, June 2, 2017, including taking control of previously self-governing fraternities and sororities, following the Feb. 4, 2017, death of the 19-year-old pledge from Lebanon, N.J. (Abby Drey /Centre Daily Times via AP, File)