School Boards and the like are allowing parents to speak not because they want to hear that many are opposed to this but as a formality. Their minds are already made up as to what will be taught to the kids.
The only way to fight and win is to remove your child from a govt. school. As I see it, we can talk til we're all blue in the face and it does not matter to thse people. I think they delight in seeing angry parents.
The way we win is by removing the kids which is legal in all 50 states. However, I do believe that once a child is in govt. school, it is much more difficult to remove that child as they will put up a fight. California is a good example of this.