Emmy, you are making the issue something it is not because that's the only way your side can win the debate.
Homosexuality doesn't match their biology. Surely they can discriminate between their own body parts. Education should be truthful. The one area of science that can get away with even pretending that homosexuality is normal is the subjective area of behavioral science. But even that should not deny every other science in drawing conclusions.
This is way beyond your right to your lifestyle Emmy. I am responsible for my kid. If he is harmed, I pay the tab -- financially, emotionally, and with time. If he does something wrong, I am held to account. If he needs something, the responsibility falls on me. SO IT IS DAMN WELL MY RIGHT TO GUIDE HIM ON MORAL ISSUES AND NOT YOURS, THE GOVERNMENTS, OR ANYONE ELSE'S.
I will not budge on the issue of children.