You have to think of a legit example first if you want to make a point...
Islam does not set rules that dont make sense and hinder normal life; otherwise it is not a rule. That's the point you dont seem to understand.
I did not say that particular dress is set by Islam. Read carefully. I know Islam does n't impose it.
This is not necessary for Islma as scuh, but he claims he wants to follow the Prophet(PBUH) in thi s way and that the school should allow his religious practice. So will you allow him or not??