Again, I'm not sure what to believe. If I had the materials in my own hands, or looked at websites put together by the people promoting the concepts, it would be easier to evaluate them.
Check out Scripter's profile page and check the Categorical Archives. I'm sure there's something there either about that particular scenario (I remember it well) or other incidents related to schools.
I didn't see what state you're from, but here in CA it has been mandatory since 2001 to teach pro-homosexual classes in schools, K-12. Some do it more extensively than others, but it is the law. Some schools have special weeks, special pro-"gay" teachers and presenters; and they are encouraged to add it to the general cirrculum. Kids are supposed to be able to be "opted out", but teachers often purposely don't send the forms, or send them in a timely manner; or the forms are sent with bunches of papers that the parents never see.
And even if a kid is "opted out" of some special class, all the others kids have been tainted by pro-"gay" propaganda, and anyway it filters in to the regular subjects, as it is meant to.
Then there are the GLSEN "Gay Straight Alliance Clubs" that are popping up all over the place.