Problem is something has to be there in the interim. So many children have a single mother, or parents work, etc. Children need education, interaction with others, guidance and supervision. For families that do not have two working parents, and are fit to do the job of educating, fine. But plenty of children are not in that situation.
Government schools are an ongoing disaster - parents will find a better alternative if they have to.
Taxes should be refunded and parents can use that to pay for proper schooling.