i wonder about it. we never had such a thing as sex education when i was at school! that doesn't mean it is wrong, of course...
i don't know.... does it help at all?
i think how we coped not having any sex education classes was just through a sense of strong self-esteem and general common sense.
one had enough sense and self-esteem not to be pressurised into doing something that you didn't want to do - and at the same time had a enough basic knowledge of biology to know that pregnancy is generally the result (unless you are infertile or whatever the case may be) of sexual intercourse without any contraception.
the whole other side of it --- as in one "shouldn't" for moral or religious reasons was never brought up, that's for sure. it was just assumed that one wouldn't, i guess?

in general, the whole subject was NOT discussed at all - in the whole of my childhood by either school-teachers or parents! i think back and i am not sure if we had any knowledge but then again, sex wasn't quite the HUGE issue it seems to have become nowadays. and it wasn't all over the TV or all over the media to the same extent, at all.
i also went to a single-sex school so perhaps that was why it was felt not necessary to have sex education classes - perhaps it was simply assumed that we would find everything out eventually.........
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is the point of sex education classes to reduce the amount of teenage pregnancies/abortions/young single mothers/sexually transmitted diseases etc.? or what is the goal of these classes exactly.
i don't mean to criticise them at all --- i am just sort of at a loss (never having had one) to imagine what they are about or how they work.