At that age they're supposed to be putting condoms on bananas.
They actually had a person from Planned Parenthood come give a sex education class at my daughter's school. I was the only parent who would not sign a permission form. The principal called me and tried to talk me into to signing it, so my daughter wouldn't feel ostrasized by my actions. My daughter didn't want to go and I didn't want her to go. I told the principle what my daughter told me, "We have already had a discussion on the matter and she didn't need anymore instruction."
It turns out that yes they had a banana demonstration and each of the girls had to in turn show that they learned how to do it correctly on their own banana. For weeks after the girls had to listen to banana jokes from the boys. Other girls told my daughter that they wish their parents had made them have to go sit in the principal's office instead of going to the class.