HIV, yes. HPV...well...even close "heavy petting" contact can spread it. And deny it as they may, even many of the "holier-than-thou's" on this site were guilty of doing a little of that without their parents' knowledge as a teenager.
Again, I don't support the mandatory-ness of it. But let's get our facts straight when we make an argument.
If the petting is truly that "heavy" on the regions that are prone to spreading genital warts, it's an act of sexual promiscuity. On the same token you could also get AIDS though from coming into contact with certain bodily fluids including cases that do not technically count as "sex" in the Age of Clinton where everything depends on what the definition of "is" is.
The point is that both HPV and HIV are STDs, and spread either by actual intercourse or something coming very close to it.
That's quite an accusation. So they're liars. You have any evidence to back that up?