While parents seek to have creationism taught in the (science) classroom based upon their claimed right to have their convictions reinforced at school, manifesting their belief that it's not enough to instil principles of faith outside of school but that their children's godliness requires never being exposed to any competing account of life's origin without immediate strident opposition, so do other parents seek to have (full and candid; perhaps encouraging abstinence, but not turning a blind eye to its widespread eschewal by children) sexual education taught in schools for the same reason, to have what they deem important reinforced in the classroom.
I tend to disagree with Moon on this. Though I think his mind is in the right place. I think the fundemental problem with his argument lies in the fact that we are talking about two different types of education. One type of education presents a student with a series of facts, other types of information and allows the student to use these facts to accomplish goals. (math is like this, 1+1=2, 2+2=?) The other type of education is presenting something and stating that it is true and then the students like good little foot soldiers will believe this until told otherwise.
Sex education is not about indoctrinating students for sex, but about giving them tools to make informed decisions when the time comes.
Creationism on the other hand, if taught well would be a good excersize for students on understanding how the scientific method does not work. (For instance, starting with a conclusion and finding data to back it up, rejecting all other information.) Otherwise it will just be a confusing peice of information that those who go on to college will have to unlearn (There are already SO many of those) and that those who don't go on to college probably wont remember anyway.
But truly, if parents are so concerned about the education of their children then they should educate them. There is nothing preventing any parent from giving their children literature on creationism, or talking about it at the dinner table. Just as there is nothing preventing any parent from discussing sex and its dangers with their kids. In the end, the real problem is that parents want to outsource their jobs to teachers. And if you outsource it, it just never seems to get done right.