I don't think there is anything wrong with sexual education, because, whether you like it or not, we are sexual and on a quest for knowledge and experience.
If we don't get sex education from a valid source, we get misinformation from the playground, such as 'When a baby is born, the doctor unties the knot in the mum's bellybutton, takes the baby out and then ties the bellybutton knot again, tightly so that it doesn't come loose causing all her insides to fall all over the floor. It is a special knot that only doctors know about.' This is what I was told by another boy.
I think the big problem is that, kids don't like talking about sex with their parents and we need somebody trustworthy to give the correct and unbias information.
If sex education had been complete, that boy would have known that rape and incest are wrong.