You've still ignored citing your claim: >>Nobody has demonstrated better results than our public system without either filtering students or by spending a lot

You've still ignored citing your claim: >>Nobody has demonstrated better results than our public system without either filtering students or by spending a lot more money. >Could you produce a citation please? I've been under the impression that several countries are beating US in public education ROI, but since I don't have that source off hand and you've already made the assertion I'll go ahead and let you fill the burden of proof here. >The charter systems all filter--that generally gives them a huge advantage If the public schools are working for the students that filter out of them, why would they be leaving? And you make it sound like it isn't working for those who are left after it's filtered either. You make it sound like the public school isn't working for anyone.