Please prove that property rights are innate.
Prove it to yourself:
http://mises.org/rothbard/ethics/ethics.asp
So is child slavery OK as long as the parents agree?
Being forced to send your child to a school is Child Slavery, do you approve of it? Do you believe that because a majority thinks it is appropriate, that confers legitimacy upon it?
The ownership of children is revolting and completely wrong (in my opinion) - both by the State or parents.
Then you grasp the fundamental problem. SOMEONE has to be responsible for children. What you have to decide is who you think should be responsible, the State or parents, and then you have to say why.
If you say the State, then you have to explain why such a violent idea is morally correct.
Children have rights. If the parents are unable or unwilling to provide them, the State empowered by the People should provide them. Education is one of the rights, as decided by consensus.
You do not know what rights are or where they come from. If you did, you could not say, for example, that not sending your child to school is removing rights from children, or that children have a 'right to education at school'.
Children do not have rights that are separate and distinct from the rights that all men have. The UN is responsible for creating this fallacious idea of 'Children's Rights' which is nothing more than a means of getting access to children so that they can be controlled in law.
The state is not "empowered by the people" this is brainwashing and rote repetition of the programming people get in Schools. Rights are not conferred or created by consensus, the UN, legislature or anything else.
Please provide the source of the One True Morality. Until then, there is no reason to believe that morality is anything but subjective to each person and therefore such judgments of value are meaningless.
If all morality is subjective, then you cannot claim that it is wrong for people to do harm to one another, since it is only the perspective of the individual that is the basis of morality, This is pure autism, "Only I am real, only what I know is true. Other people are not real, they feel nothing; only my feelings are real" etc.