not the norm

Mary Kay Klassen Mountain Lake, Minnesota: It is not the norm for children younger than 12 to be violent. - это нужно целиком сохранить, как бы не удалили.

how does she know what is norm and what is not? and what exactly happens at 12? is madam referring to puberty i'm curious to know

из дискуссии Young Souls, Dark Deeds