According to Wikipedia:

"Palin answered a 2006 gubernatorial questionnaire by choosing support for funding of abstinence-before-marriage programs over support for 'explicit sex-education programs, school-based clinics and the distribution of contraceptives in schools'.[25] In a subsequent radio interview with KTOO (FM) in Juneau, Alaska, she clarified her position by saying she was against explicit sex education, but was in favor of contraceptive education.[25] She characterized in-school discussion of condoms as 'relatively benign'[25] and not something that would define an 'explicit' program. Palin said of contraception that 'kids who may not hear about it at home should hear about it in other avenues.'[25][26] Rebecca Traister of Salon.com analyzed Palin's political record as one that demonstrated her lack of enthusiasm about the Bush era promotion of abstinence-before-marriage education, and one that showed she did not work against existing sex education laws in Alaska.[27] "

So she hasn't tried to reverse existing programs, but she's unenthusiastic about the abstinence before marriage programs she chose over explicit sex ed. This is further clarified by her explanation that it's OK to talk about condoms as long as you don't get explicit. I'm not sure if that means you're not supposed to teach kids how to put them on right or if talking about the penises role in sex isn't explicit, but either way I'm dubious. I'm beginning to wonder if Bristol Palin understands moms views on the issue either....