We should be asking that question.
Many parents are asking that question. Home schooling is growing in leaps and bounds.
"Many parents are asking that question. Home schooling is growing in leaps and bounds."
Yes, and given the state of American schools, that's a good thing.
My point, however, was that there is no consensus--nor, I think, any compelling argument--that compulsory schooling itself is either unconstitutional or malum in se.