I dont think its a good idea, because of many reasons. For example people need to learn different learning styles(not just the ones that they like the most), school isnt just for learning facts from books. But learning human interaction as well and it would be really disadvantageous in this regard, as the kids would mostly just interact with people of their own temperament.
What needs to change is the teaching styles. Usually its most focused on certain learning styles, but needs to be broadened, so that all the types could learn easier. Luckily MBTI is used in teacher training, at least sometimes, but the MBTI training should be put more weight onto