I'm an ordained minister in the Church of the Flying Spaghetti Monster. Not joking. I have the rights of any ordained minister in my state. I'll go to school and help kids. No problem.
(I also got our friend ordained to marry us legally.)
I’m not even an atheist and I love it. Religion has no place in the schooling of children. Theology for adults is a different thing entirely but no, children shouldn’t be indoctrinated in schools. And if they are, turnabout is fair play.