Hmm, back to my innocent days in 6th grade. We were seperated into boys and girls for a day. We (the boys) talked about the way a sperm had to travel from production to dedication. Talked about ways of prevention, we got some textes and had to present them to class. I was the only one chosen to show how a condom is applied (I had to use a kind of huge dolphin-shaped dildo, which was really gross!) - by the way, did it perfectly on the first try

. When I was about to throw it into the trashcan our teacher told me not do it, because the cleaning stuff may get shoked. I was being laughed at because I had no idea what 'petting' meant, but nobody explained it. What sex actually is and how it is performed what not explained at all, they thought probably, that our parents had told us already.
The weeks after we were taught by our female biology teacher about the female cycle in detail, which was really educational.
Do you Americans really only use videos and talk about STDs most of the time? We barely mentioned them...