FILE - In this June 5, 2012 file photograph, Princeton University President Shirley M. Tilghman addresses the graduating class of 2012 during the school's commencement in Princeton, N.J. The first woman to serve as president of Princeton University says she'll leave her post at the end of the academic year. Tilghman announced her intentions in an email Saturday, Sept. 22, 2012, to students, faculty, staff and alumni. She had informed university officials a day earlier. (AP Photo/Mel Evans,file)
