I think teenagers learning about all the awesome non-vaginal-intercourse
in' around they can enjoy would be helpful.
"not at all" programs don't help curb other adolescent deviant behaviors, for example - binge drinking is a more widespread problem in the US compared to other nations. Abstinence is treated in a similar way, and that's why it's ineffective.
But "today we're going to learn about safe, pleasurable anal" class in high school will *never* happen (even if it's the last sort of thing that should be learned by trial and error, egads). Social conservatives would never consider the thought, and hell, most parents, no matter how liberal or open-minded, don't want institutions teaching their children about such things.
When it comes to parenting styles, even the most open, liberal, egalitarian parenting types turn into clean-the-gun-on-the-couch-when-the-date-comes-over-to-pick-up-your-daughter type of control freak the moment they have a daughter reach puberty. So this is something that, while very sensible, has huge mountains to overcome - it's not something I think we'd see in our lifetime.
Just over a decade ago, Clinton fired then Surgeon General Jocelyn Elders for answering a question during an international conference affirming that she thinks masturbation should be taught as a safe sex alternative.
(now, that's more evidence that the idea that Clinton was super-liberal is an old wive's tale and a right-wing attempt to rewrite history, but that's another topic for another day.)
EDIT: I almost spit diet coke all over my monitor picturing motivational posters in high schools around the country with slogans like "Cum on my Face! It's the safe way to avoid pregnancy!"
