Parents yes, teachers no.
The state has a valid interest in some aspects of sexual behavior. However, the root issue is morality, which is the domain of the parents.
Since I've typed on this topic before and read many of the arguments, I scanned this one and decided to post, once again, my address to the above short-sightedness.
The state and/or feds will be paying for young people and their children who can't make ends meet. This is the way we continue working towards a near-complete welfare (or assistance) generation.
Sex is a health issue first and foremost which happens to carry moral implications. Can a person have healthy sex in an immoral way? Of course. Can a person have unhealthy sex in a moral way? Of course. It is a two-pronged issue that must be addressed bilaterally and symbiotically.
The impact on public health is undeniable. That said, competent, correct instruction simply MUST be mandated. In fact, I see this as at least as big an issue as the vaccine controversy and herd immunity.
Health instruction should be given by competent and licensed health professionals.
Moral instruction should be given by parents and any other virtue-based groups they choose (church, etc).
I just won't back down from this. There are FAR too many kids out there getting incorrect information from schools and many who stay home and get NOTHING or bad information from parents.
It should be a bigger campaign than the AIDS campaign - we have an entire world-level class of young people having children and unable to earn a decent wage for a progressive lifestyle let alone PAY for THEIR OWN CHILDREN.
That's my story and I'm stickin' to it.