Republican U.S. presidential candidate Donald Trump speaks at a campaign rally in Raleigh, North Carolina.

Donald Trump loves to name-check his alma mater, the prestigious Wharton School of the University of Pennsylvania. His two-year tenure at the school is an important pillar of his public persona that he's used not only to burnish his business credentials but to contrast his academic pedigree with his political rivals.

But some members of the Wharton community are fed up with their famous alumnus.