Should my 12 year old brother be wearing snow pants to school it’s -12 outside ?

Should my 12 year old brother be wearing snow pants to school when it’s -12 outside since he has outside play 

Pearl2021-03-03T00:27:37Z

thats not a bad idea

?2021-03-02T19:23:38Z

havent seen them since the 70s

?2021-03-02T13:14:49Z

It makes sense to me that he is wearing snow pants. What do the other students in school wear? Are they freezing when they have to go out?