It may have been active "cover up" - but doesn't need to be (or have been). It could be just passively ignoring and not being curious about fraud that benefits

It may have been active "cover up" - but doesn't need to be (or have been). It could be just passively ignoring and not being curious about fraud that benefits you. More (apparent) students benefits the school. Suppose I'm running a tech company and a bunch of "users" are actually non-engaged, fake accounts. If my valuation is based at least in part on how many users I have, there is not a lot of incentive to go actively looking for, eliminating or preventing these fake accounts. I may even continue to believe that they are all real, engaged users and not even consider the alternative.