And why exactly should only those that pull their kids out of the system get their money back just because they no longer have a kid in the system? What about those of us without kids? Those that have kids that are no longer in K-12? In addition, those that have multiple kids should be paying on a per-kid basis?
You seem to think that you should only be paying for ONLY those city/town services that you use and screw everyone else. "I never called or needed emergency services....I ain't paying for 'em. I don't drive a car, I ain't paying for the town to plow or pave the roads....."
I prefer a “fee for service” system. Socialism is less efficient, and of course it’s immoral, because nobody should be forced to pay someone else’s bills.