"You can only help people if everyone gets the exact same amount of help", is the dumbest argument on the planet. And I'd challenge you're premise that blue collar works are paying for white collar workers to go to school. With progressive taxation, really it is upper middle class and wealthy people that are paying for that school regardless of education background. Very little of that money is coming from the blue collar workers that aren't brining in a lot of money. If $2 of Joe the cashiers taxes go to paying for education but $20,000 of random rich guys taxes go to bettering education, I really don't think that is such an unfair system like you make it seem. The lack of a debt burden on a large subset of society ends up benefitting everyone, including the janitor or cashier.