One point worth keeping in mind, Charles, is that the federal government plays a much larger role in financing higher education than it does in financing K-12 education, and its policies have accordingly had a bigger impact. Federal higher-ed policies have done a lot to inflate prices and restrict new entrants into the field. Federalism in higher education, then, should not just mean letting states adopt their own reforms and refraining from having the federal government impose them nationally–although it should certainly mean both those things. It should also mean reforming the existing federal role so that it is less inflationary, less anti-competitive, and, well, less.