Well if America is the land of liberty and champion of democracy the answer should be pretty self explanatory. I don't know american laws but i assume they are similar to England. The cuuriculum must cover certain subjects and education standards meet certain requirements. Failure to do this would mean the state was not fullfilling its commitment to providing good basic education. Beyond that its up to the school.

PS a bit more foreign language for americans may not be a bad thing. I think the intelligence services are desperately short of arabic speakers and who was that politician (Qualye?) who regreted not learning latin at school because it would help him in his visits to latin america!