But why shouldn't children learn the name for their genitals, Sighing? I mean, it seems incredibly coy to be offended by children learning the correct terms.
I mean, if we end up with the "it's up to the parents to decide when the children learn these terms" stance, we end up with parents who will raise their children with the correct terms from a young age. We have other parents who won't teach it at all, thus leading to kids learning about sex and their bodies through media and playground gossip (hardly the most reliable method).
It also leads to inconsistencies in teaching. Surely it's easier to teach a group of children about reproduction when they all know the same term, than it is to have to work at replacing each term in the child's conscious thought, and erasing the subconscious thought that these terms are "rude" and "dirty". I remember half of my sex ed classes were disrupted by 11-12 year olds sniggering at the teacher's use of the words "vagina" and "penis".