Kids are not stupid, they know about sex way before sex education.
Sex is natural, you don't need a teacher to tell you where to put it, nobody teaches the birds and the bees how to do it and nobody needs to teach it to human kids, it's instinctive, nobody taught my lil pupp to hump my leg (my God that's embarassing when he does it in public) but we do need teachers to teach about contraception and disease prevention.
If anything sex education actually makes it less "forbidden fruit like" (people less eager to try it out) and keeps young pregnancies at a minimum.
Sex education is a good thing, it teaches about contraception, disease prevention, mensturation, nocturnal emissions, sexual intercourse to confused young teens, it's enlightening...
The internet ofcourse teaches kids everything nowadays! Call us stupid but when we were 13 yrs old we had NO CLUE!! Even when we were developing female features, I used to think I had some disease.. coz of the chest pains!
And it wasn't until I was 16 yrs old that I accidentally found out where they "put it".. Something about sexuality came up in the religion class in school and no one could give the definition of the word sexuality. So the teacher told us to look up a dictionary at home and write down the definition of sexuality.
So I looked up the dictionary, came across the word "sex" before "sexuality" .... and then the dictionary told me... !