In France public schools are 100% free, and private catholic schools have teachers paid by the state + a per-student benefit, so that the remainder paid by families is 200-2000€/year. I find it nice since it promotes alternatives, in case there's a problem with the local school. Contents and efficiency are checked by the ministry, so they don't diverge very much. In Bretagne it's 50% private schools and in the south of France about 15%.