Comment by simonsarris

If you read something like Annie Dillard's An American Childhood, you realize that teachers didn't. In the middle+ class at least, the children's parents did that work by organizing specific extra-curriculars, such as dances, from a very young age. These ensured that the children learned manners, dated people of acceptable character or class, etc.

That social infra is simply gone today. Parents don't have much of an interest, or are erroneously(!) assuming that teachers are supposed to do it, or used to do it. We are less class focused* today, which may be good, but certainly less manners and etiquette focused as well.

* by that I mean like, if you are an American of German descent, you are not particularly worried if you child is dating an American of Irish descent, whereas you might have been in 1940. Similarly (and overlappingly) for Protestant/catholic etc etc. Not even what we typically think of as class today! We're so blind to a lot of that stuff now, we forget it existed, just like the other social infrastructure.