I would need to be convinced that high school uniquely prepares one for the subtleties of adult interpersonal interactions. Until I see a strong argument one way or the other, I'm just as apt to believe that high school actively gives a false sense of the subtleties of adult interpersonal interactions. And as far me as an adult now, if I notice almost any similarity between an interpersonal interaction now and interpersonal interactions in high school, that's a huge red flag that this is probably not a mature and healthy interaction to take part in.