Folks need to remember, any vaccine needs to be administered before exposure. Statistics tells us about sexual activity rates among teenagers so as a policy matter you want to vaccinate before then but not at an age before the vaccine is considered safe. The FDA says that's 9 yo. which is 3rd grade. CDC recommends it for 11-12 yo.
Perry protected parental rights by streamlining the existing opt-out process for Gardasil. Compare to California which has passed a bill to give 12 year olds themselves the right to consent without parental knowledge or permission.
“CDC recommends it for 11-12 yo.”
I heard that also - by at least age 14-15. But it wasn’t just an issue of exposure age, but other physical factors as well for effective protection requiring that relatively early age.