The red-faced weasel had to admit it under oath in deposition in one of the Trump University lawsuits.
https://www.documentcloud.org/...ump-Depositions.html
Scroll down to Exhibit 2 in the link below and read how the plaintiffs' attorney worked Trump over the coals. Trump made a big deal of claiming the instructors in his bogus university were known by and hand-picked by him. It was a BIG FAT LIE!