The issue is quality of education is not easily quantified and measurable beyond testing. People want to see their tax dollars working but then you have now a system in place to protect both the teachers, the schools, and the tax payers but NOT the actual students.

I've helped a few Charter Schools and religious ones, and while the kids are mostly behaved everyone I've been too they are way behind track academically. I think the actual lack of oversight creates a different problem.