Who's picking up the slack on World AIDS Day 14

On this World AIDS Day, around 80% of US high school districts have policies allowing parents to exclude their children from instruction on HIV prevention (and/or instruction on preventing pregnancy and/or sexually transmitted diseases and/or human sexuality). This represents an increase since 2000 of more than 15%.

On this World AIDS Day, HIV in the US appears to be spreading most rapidly among young males (aged 13-24) having sex with males.

Question: are the parents who exclude their teenage boys from instruction on HIV prevention picking up the slack — meaning — are those adults teaching their youngsters how to prevent HIV infection? And if not the parents, then...?