You absolutely should give a lesson on budgeting/debt/investing. The Patagonia clothing company urges its customers to buy used/repair Patagonia clothing, and it still has buyers. Teach them about credit (how to check it for free, how to manage it, and how to lose it), managing a budget, and compounding interest. Talk about credit card debt and student loans (but only if you're prepared to be honest). If they learn it from your school, they may grow up and think, wow! my university actually taught me about this stuff, which has made my life so much easier. Perhaps, I'll give them a donation.
Personally, I think it's terrible that schools don't want to talk honestly to students about the debt they are taking on and the cost of their education. Let's not forget the purpose of a higher education institution: to teach the students, not to make money for itself.