MEMPHIS, Tenn.--(BUSINESS WIRE)--EdR (NYSE:EDR), a leader in the ownership, development and management of collegiate housing, today announced that Standard and Poor’s (“S&P”) has upgraded its outlook on the company to positive from stable, and affirmed its 'BB+' corporate credit rating for EdR and its 'BBB-' issue-level rating on EdR's senior unsecured notes. In its RatingsDirect publication dated August 5, 2015, S&P states that it “based the positive outlook on our view that EdR's stab