Kaiser Fung attacks the idea that everyone should go to college because graduates make more money:
[P]roducing more college grads will have two predictable outcomes: lower average salary for all college graduates, and more young people burdened with school loans. I think these same economists will label these "unintended consequences". Should we be implementing policies that have predictable "unintended" bad outcomes?
The British example on this issue is not encouraging.
The Dish 