What would "advanced sex education cover, that could irreducibly damage the psyche of a 13 y/o?
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Anything more advanced than what I listed earlier. In the words of the OP.
Schools have no business teaching anything further than the basic biological function anatomy etc that
I've already listed.[/QUOTE]
Well, considering that many tropical peoples walked around naked all the time, and that kids of all ages witnessed sex play routinely without apparent trauma, this terrible truth must be something invisible to primitives, perhaps the endocrinology involved in arousal, menstruation or pregnancy; or maybe embryology -- or would these fall under "science" and thus be harmless?
Speaking of science, what about the ontologic shock of relativity, or ... gasp! ... quantum mechanics?
Why is it that kids can freely watch murder and mayhem all day on TV, but never a bared breast?
So why is it the business of schools to teach reading, social studies, history or math? Shouldn't the parents teach these?