The Associated Press Story is a bit more informative than the USA Today blog entry in TFA.
This is the part that boggles me...
Southworth also argued that teaching contraceptive use encourages sexual behavior among children, which equates to sexual assault because minors can't legally have sex in Wisconsin.
The arbitrary line between "minors" and "adults" having sex is strange enough. Any law forbidding consenting adults is completely ridiculous. Saying that two "minors" can't go at it truly boggles because who's going to know, who's going to care, and what punishment could be worse than NOT fulfilling the biological urge with someone else who has that urge? ... I figure that is how many teens are looking at it, anyhow.
I wonder if the law also intends that minors can not legally have solo-sex? Craziness...