[bc2]

since when is compulsary education a legitimate function of government? maybe provide an example or two.

thanks in advance

[CholeraJoe]

since when is compulsary education a legitimate function of government?

Your profile doesn't indicate your state, so I picked Texas' Constitution as an example:

The Texas Constitution

Article 7 - EDUCATION

Section 1 - SUPPORT AND MAINTENANCE OF SYSTEM OF PUBLIC FREE SCHOOLS

A general diffusion of knowledge being essential to the preservation of the liberties and rights of the people, it shall be the duty of the Legislature of the State to establish and make suitable provision for the support and maintenance of an efficient system of public free schools.

You can disagee with the premise but you cannot dispute that public education has constitutional authority in nearly every state and is thereby a legitimate function of government.