HARRISBURG, Pa. — Penn State's ex-president and two former top school administrators were ordered Tuesday to stand trial on charges accusing them of a cover-up in the Jerry Sandusky child sex abuse scandal, a court ruling that promises to prolong the media attention and court battles casting a shadow over the university. Prosecutors showed enough evidence during a two-day preliminary hearing to warrant a trial for ex-President Graham Spanier, former vice president Gary Schultz and ex-athletic director Tim Curley, District Judge William Wenner concluded. Wenner called it "a tragic day for Penn State University."