It's not a question of obnoxiousness. It's a question of proper documentation so you do not risk presenting as a negligent parent. You need to lay the paper trail. Have you received a formal answer that your ds will not be grade-skipped or accelerated? If not, I would request an answer in writing. Then you would be able to appeal that decision and offer another option by logically presenting the necessity of pulling your ds from math/science instruction due to the harm of sitting through further instructions too far below his level. Of course, all that is contigent on whether you have the legal right to do so per your district and state laws/polices.
