What a sanctimonious bunch, reinforcing a double-standard (the boys don't have to go, do they?) and withholding the really useful information like how to prevent disease and unwanted pregnancy. Like these girls are going to marry men who are virgins, keep it a closed system? Ha!

But critics say that while teaching abstinence to children may be laudable, it is just as essential to make them aware of sexually transmitted diseases and condom use.

They also point to studies showing that the majority of adolescents who take purity pledges break them within a few years, often by engaging in risky and unprotected sex.

One study conducted by researchers at the universities of Columbia and Yale found that 88 percent of pledgers wind up having sex before marriage.

"Unfortunately these young people tend, once they start to have sex, to have more partners in a shorter period of time and to use contraception much less than their non-pledging peers," said Debra Hauser, executive vice president at Advocates for Youth, a Washington-based non-profit organization.

"Teens may pledge with the best of intention... and then as they break their pledges they are so shamed and embarrassed that it's unlikely they will go for help."