Public schools are doing that already. Of course they are explaining it in a way that makes the children believe it is natural.
I endured a PP sex Ed class (by my own choice) in middle school. The woman went on and on about anal sex and how to choose condoms. She even told us about flavored ones. All the other Sex Ed courses I took were purely scientific and informative without encouraging kids to participate. The PP one told my fellow 8th graders and I how to glean as much pleasure as you can from sex. It was quite distasteful.