Thomas Sowell wrote three articles on the economics of U.S. colleges recently. I highly suggest reading them.
The Economics of College I
The Economics of College II
The Economics of College III
They talk about how college is affected by fiscal policies of gov't that are directed toward it. I'll probably give a longer summary once I read through them again or when he releases more.

I'm sure there will be more though. So I'll keep you posted on it.