Should College's "Buy Stock" In Top Students?

Income Share Agreements (ISA's) are being talked about in the media. The college that is leading the way is in my backyard- Purdue University.
Basically the University can pay for your college tuition IF you agree to give up a percentage of you income for the first three years of you career.
Is this a great idea, or a really bad one?
I would like to hear from you!
Email me at [email protected]
I will select a comment and send you a book.