One way, I think, would be for the students to go on strike, but I have no idea what kind of impact that would have.
Other than that I think it will come to their attention eventually. If graduates begin to get jobs that do not require degrees and they become very successful with those jobs, then the students will learn about it and dropout rates will be through the roof. Also with so much information out there kids are becoming more knowledgable and most will see how obsolete the system they are in is.
Any ideas yourself?
RE: A Proposal For The Future Of Education - Change Is Needed