As a small biz owner, I can tell you BBB ratings are a matter of money.
ABC did a piece on this in 2010. BBB the best ratings money can buy.
http://abcnews.go.com/Blotter/business-bureau-best-ratings-money-buy/story?id=12123843
BBB gave a Hamas front group an A- rating and has also giving Wolfgang Puck an F rating, with no justification. Also gave Ritz Carlton an F rating.
It’s pay for play at BBB, always has been.
when this came up I checked BBB and put both Trump University and the other name and the info I got was, This business is not accredited by the BBB, there was no rating.