In 2005, John Vogel, an adjunct professor at Dartmouth College’s Tuck School of Business, stood at a news conference with Donald Trump and professors from other top-ranked schools to announce the launch of Trump University.

He was proud of the video lectures he recorded on topics such as variable versus fixed-rate mortgages and how to weigh pros and cons of different properties for an online course directed at would-be real-estate investors.

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