Kids usually find out these through the vine by sixth grade, it's good to educate them in early adolescence as the education about both the benefits of sexual expression and negatives of carelessness can help a TON.

I mean, really; what are we "protecting" them from? Nothing. Not teaching youths the facts of sex and sexuality is a means of appeasing our own discomfort with the subject to the detriment of those youths. Fact: teens want to know (more than most anything else, in a lot of cases) all about sex. They want to do it, they want to feel it, they want to talk about it. Who in the equation has the problem with it, however?. The adults do, and to protect their own comfort, adults have made up all kinds of b^^%!@*t about how we need to protect children from sexuality. That's like protecting them from their g!&&&*n legs; literally denying them knowledge of -->. an important, fundamental aspect of what they are as sexually burgeoning human beings. And that, you can take to the bank and cash, as it's a many-times proven, repeatedly emphasized fact in the business I'm in. .