This is not something that should be forced upon our children. Teach what has been known for thousands of years. There are male and female members of the human race. The sexual part of the human makeup was created for reproduction of the species, not for the sexual pleasure, although the pleasure is an enticement to lead married individuals to reproduce. Sexual attraction is part of the human reproductive system. The LGBT movement is part of the movement of Relativism and does not change the fact that just because someone might be attracted to their own sex or an animal or a plant, etc, makes it right to engage and applaud that choice, any more than choosing to kill someone.
There are absolute rights and wrongs. We must love all people regardless of their orientations, but we need to teach the right vs wrong actions that the LGBT community pushes on society.