Some alumni of the Yale University School of Management fear that it is abandoning its unique qualities in a bid to compete with top business schools, Bloomberg  reported. Yale's management school -- which didn't offer an M.B.A. until 1999 -- has historically had much more of a focus on preparing leaders for the nonprofit or government world than has been the place at leading business schools. But Yale is also ranked well below the top business schools. A new dean who intends to challenge the top b-schools has set off the concerns. He is Edward Snyder, who was recruited from the University of Chicago.