I think this article says all that needs to be said about the so-called abstinence-only sex education :

http://seattletimes.nwsource.com/html/living/2008879687_apbabyboomlet.html

Basically, after a decade of teaching kids to ‘just say no’ without any further information we not only have a population boom larger than the one we experienced when the boys came home from WWII, but 40% of those children were born to unwed mothers. Which means that the boys are getting off and then taking off.

I see two things here: sex education is a necessity and there needs to be more responsibility taken by both parents if they decide to have the baby.