Lawrence Krauss "science teachers should get paid more"

I had the privilege of meeting Lawrence Krauss last summer at Chautauqua Institution. I like him more every time I hear him speak. His ideas in the video below are no exception. But I am wondering if PZ has a point when he says "You can't buy good teaching." I do think all teachers should be paid more. However, in my opinion the free market has no place to operate in the classroom. If it did we might have home-ec sponsored by coca-cola, and social studies funded by Halliburton. No thanks.