I don't have any religious/moral/philosophical objections, but I do have concerns about whether or not it does any good.
I'm all about the evidence. Has the curriculum been field tested and intended and unintended results measured? So many of these types of curricula turn out to be useless, at best, and sometimes they actually cause damage.
Years ago, there was a very extensive and expensive intervention for pregnant high school girls, designed to decrease rates of future pregnancy. When they actually looked at the impact, it turned out that the enrolled girls were getting pregnant again at higher rates than those not in the curriculum. Turns out putting a bunch of pregnant teenagers in a room together made them compete for having more babies. :confused:
Schools love to implement new curricula (think whole language and cr*ppy reform math) without bothering to find out whether it's actually effective. Unless it has actually been shown to be beneficial, I'd really rather they stick to actual teaching. If it really decreases rates of sexual activity, stds, and pregnancy, then I'm fine with it.