My teacher yelled at me? Is it fair?

That's what those Christians want. They want to silence everyone else and stick their own religion down everyone's throat. They suspended you because they knew you were a threat to them. They wanted to silence you and make an example out of you for other non believers. You should protest your suspension although it wont do much good because the supreme court will favor the Christians over you because they all go to the same church. Just keep on fighting the good fight.