Time (not the greatest source. Makes the same claim. The business is defunct.
http://time.com/money/4247972/trump-university-better-business-bureau-rating/
Quote “
Back to Trump. The BBB issued a statement to PolitiFact stating “Over the years, the company’s BBB rating has fluctuated between an A+ and a D-.” Investigating further, the site found that the last time Trump University was rated by the BBB in 2010, it received a D- rating. The business closed down that same year. Trump is incorrect insofar as the Trump Entrepreneur Initiative does not currently have a rating from the BBB, because it closed down.
What we do know, from several published reports and archived Web pages, is that the university had a D in 2010 and under its new name, had ratings ranging from C to B, with no ratings after March 2014.
On March 3, Trump tweeted an image of the BBB rating appearing to show an “A” rating, although a search today on the website shows that there is “No Rating.” Michael Cohen, executive vice president of the Trump Organization and special counsel to Donald Trump, emailed MONEY a screen grab that showed the photo that Trump tweeted was accessed from the BBB website in August 2014.”
Yesterday I searched for the BBB rating and found it, today it has been changed. When I found it the rating said that it had been a D and that the reason was that the BBB had reservations about the industry. There were no reasons specific to the company.
This Mottly Fool article from 2013 also rates Trumps school very badly.