I remember having a conversation with my uncle one time, and he said while I and my younger sister were growing up, if we did anything wrong, my mom would caution them for not correcting us, and she would tell them that it's not only her responsibility to train us up but also theirs.

But it's different now; most parents don't want another person to correct their children. I was talking to a church member yesterday who is currently doing her teaching practice in the class my daughter is in, so I was asking her about my daughter's behavior generally in the classroom. While we talked, she told me how one of my daughter's classmates reported their classroom teacher to her parents, and the mom came the following day without asking if what the daughter said was true or not. She rained insults on the teacher and told her her work is to teach and not to train.