The thing I've noticed that most people don't talk about is that it covers both "sexual orientation" and "gender identity," which are two very different things. "Sexual orientation" implies sex and, yeah, I can understand why people don't want teacher mass-instructing a room full of eight-year-olds about who to bang and how. "Gender identity," though, is about how you fit into society, and whether you prefer masculine cultural ideals such as wearing pants, playing with trucks, or being called "Steve," or feminine ones such as wearing skirts, playing with dolls, or going by "Stephanie."
Back when I was in school, there were a few of the girls in my class that we called tomboys, and some boys that we called "shy" or "sensitive" because they'd rather play with the toy nurse kits or the E-Z Bake Oven than throw a football. We didn't use or even know the term "gender identity" back then, but wasn't that the same exploration of who they were and what they liked? Isn't that a huge part of being a kid, figuring out what you like and how you like to present yourself?
I worry, then, that this will provide an excuse to allow reactionary parents or politicians to demand the firings of gay or LGBT-friendly teachers, or shut down teachable moments about why so-and-so has two Daddies, or why a certain teacher dressed like a boy last year and dresses like a girl now. There is wisdom behind putting out state-wide guidelines about how to approach the subject, but I am concerned that elevating it to a law, for which someone can be arrested, is inviting a treatment that is worse than the disease.