This is the root of the problem. Anyone can get a degree regardless of aptitude. Loans will pay your way in, the school will do everything in their power to stop you from flunking out.
Maybe make schools take some brunt of the loans. If they feel so strongly that their degree is worth it, its like they should back you as an investment.
[1] https://www.inc.com/salvador-rodriguez/long-term-coding-scho... [2] http://time.com/money/4568213/income-share-agreements-colleg... [3] https://www.economist.com/finance-and-economics/2018/07/21/i...