Lol, so your essentially saying society needs forced education to enforce libertarian ideals, and then you go on to say that compulsory education is slavery? Make a choice man.
Unless of course your saying we don't have libertarian ideals, and thus we don't force education. I'm waiting to hear your alternative. I'll be disappointed if it's socialism.
Self-governance. (Lifelong) Learning is the only real choice. Anything else requires coercion, which is Harm. Socialism is a word camouflaging confiscation and slavery.
One of the best libertarian ideas is that coerced schooling is evil. Libertarians do not replace it with anything. The One Law replaces this with ''You need to learn. Everything."
Libertarians I have dealt with still regard law as some kind of kitchen recipe book you can just keep adding pages to and that Harm is just an uncomfortable consequence of whatever...