https://www.americanthinker.com/blog/2018/07/temple_university_blows_the_whistle_on_its_own_bookcookers.html It's a start.
The main issue was falsifying data submitted to US News and World Report, for their evaluation and rankings. I've often wondered how much of this goes on, and if US News makes any attempt to verify the data that are submitted to them?
Here's what they say, if you haven't seen the latest: https://www.usnews.com/education/best-colleges/articles/rankings-methodologies The term 'methodology' is always followed by some good looking stuff.