Sorry, but abstinence as a policy is a failure. Not only is it not healthy to totally repress perfectly normal behaviour, but it doesn't happen because it is unsustainable except in very few individuals. You cannot name a single community anywhere in the world at any time in history where total abstinence was actually observed. From nunneries to prisons, navy ships to emergency rooms, someone at some time will be having sex.
Good sex education is as much about empowering young people to say no as it is about helping those who do have sex to do so safely. Having sex in a responsible and caring mutual relationship is what sex education seeks to promote, and I would argue is a good deal more moral than lambasting the vulnerable for having a fully functioning biology.
Here's a thought. Teens know what sex is all about. They know about STD's, and basic anatomy of their respective genders. They know how to get pregnant and how to prevent them. We can educate them ad nauseum, but it won't change teens who lack self control, think without engaging their brains, and behave foolishly.
I believe that sex is between and man and a woman as Jesus describes it Matthew, chapter 19 states. Anything else is sinful and almost always carries consequences. I believe that the phrase "friends with benefits" says it all. Bottom line, responsibility is the casualty. If people can't act responsibly, the thought of murdering their child is easy.