Sounds pretty close to fascism to me.
I think you turned my statement around and the result is not logically equivalent. I said the primary job of the schools is to turn out productive and responsible citizens. I think for a society to function its members should speak the same language as part of that education.
But is an individual necessarily unproductive and irresponsible if he/she speaks another language...of course not. That doesn't change what should be a function of education, which is to prepare students for full participation in the experience of being as US citizen.