One more point: Homeschooling (which is often promoted here) may be a superior way to educate children, but it is not practical for all families. For instance, as one poster has already pointed out, a single parent may not have the luxury of staying home to educate his or her children.
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Homeschooling is the superior way to raise a child.
Yes, there are some children who must be institutionalized for their education. That is a shame. We need orphanages too, but no one is claiming that orphanages are the best place to raise a child.
I do not disagree with you about orphanages. It would undoubtedly be best for children to be raised by loving parents in stable homes. But if orphanages are necessary, it is entirely right to insist that they be operated in the best possible way for the children they serve.
The same is true of the public schools. Perhaps someday all parents will homeschool their children. However, that day has not yet arrived. So long as we continue to spend money on the public schools, we taxpayers have every right to insist that the schools be operated in the best possible way for the children they serve.