School Speaker

Chris Kluwe is a punter for the mn Vikings. He is intirely infavor of marriage equality. I looked him up online and found a very popular piece of writing by him that I found to be quite inappropriate. He used many intolerable words and spoke against some religions. I am concerned about the fact that my schoolboard is allowing this man into my school to teach his opinion. I just wanted to know if there is a rule or something against this sort of thing from happening? And this isn't because I am against homosexual's (Many of my friends are) but because I feel the school is overstepping some sort of boundary. I also want to add that it is optional to go see this speaker, but I know many students will because it gets them out of class...