ujm > is appropriately left to be learnt once a person is older.
from whom? If everyone in school insists that it is their way or highway, then they’ll stay the same as adults. I am not sure though what they are learning that they are not aware of opinion diversity. If they are not learning Gemorah that is full of opinions, they may be at least learning Sh’A that is a Sephardi sefer with Ashkenazi notes.