FILE - In this May 21, 2012 file photo, Yale University president Richard Levin, right, leads a procession during Yale's commencement exercises in New Haven, Conn. Levin, 65, announced

 

              FILE - In this May 21, 2012 file photo, Yale University president Richard Levin, right, leads a procession during Yale
FILE - In this May 21, 2012 file photo, Yale University president Richard Levin, right, leads a procession during Yale's commencement exercises in New Haven, Conn. Levin, 65, announced Thursday, Aug. 30, 2012, that he will step down at the end of the academic year after 20 years at the Ivy League school. (AP Photo/Jessica Hill, File)