"There is no one-size-fits-all way to prevent teen pregnancy," said the CDC's Dr. Wanda Barfield during a telephone briefing Tuesday. "Only 50 percent of high school students are getting comprehensive sexual education, including abstinence and contraception."
President Bush was a major proponent of abstinence-only programs, pumping more than $100 million to fund those type of initiatives.
On the other hand, President Obama pumped $114 million into a teen pregnancy Initiative aimed at looking at ways it improve sex education by promoting both abstinence and contraception. However, funding for that initiative soon may end because of the current budget tightening negotiations.
"Abstinence only doesn't work and it violates people's right to accurate information," said Leslie Kantor, Planned Parenthood's National Director of Education. "Comprehensive sex education includes information on abstinence as well as methods of contraception and information about relationships. Those are the programs that actually work."
It's a point that even Bristol Palin has conceded in other interviews, where she has said that her mother's view of abstinence, especially in relation to teenagers, is "not realistic at all."
Bristol Palin maintains that she adores her son Tripp and never considered any other option to giving birth -- but in a perfect world, if she could have the same son later on, she would have waited to have sex.
But, life isn't perfect. In a 2010 interview with ABC News' Robin Roberts, Palin said her biggest message is not the benefits of abstinence but the difficulties of being a teenage mom.
"Just being 100 percent responsible for another person and having my childhood taken away from me [has been difficult]," she said. "Most girls don't have that support of a husband or a boyfriend. I just want to let teens know how difficult it is to be a teen parent."