The bush government spend each year about 87 million dollar for education of sexual abstinence.I'm not challenging any of this, but I do wonder if the 87 million was exclusively in teaching abstinence, or covered other topics as well.
There are two general parts to sex education - the physical aspect/consequences and the emotional consequences. The former may seem easy to teach (just take teenagers on a field trip to a public health clinic), but the latter is much tougher.
So even if teenagers are smart enough to take all the major precautions (condoms, etc.) to prevent the physical consequences....there are damn few teenagers who can handle the emotional aspects of sex.
The best parents/adult role models in the world are ones successful at raising their teens to realize that they don't have all the answers.