Passing laws to take away freedom is not the answer. Educate people and present solid non-biased analysis. Do you think those parents really understood the problems that could happen. Michigan has had poisoning(ddt), failed fluoride water, Nuke plants that disappeared(north of detroit), a new invasive species every week killing everything, massive poisoning of the water, Canadian Trash/medical waste that can't be stopped from coming in, self insured insurance laws(lobbies), and all other types of fun crazy things going on. In the mean time the state isn't exactly great when it comes to funding schools.
I'm from Michigan and education in real analytical thinking for everyone is the big problem. Religions do not want it(what), certain political parties do not want it(guess), manufacturers do not want it(cheap labor), and many sellers of goods don't want it(profits).
Teach them how to think and make their own choices based on facts and rational thinking. Right now you should all be saying where is the real education and why are we not informing them? Not new laws to take away more freedom.