Affiliate Marketing Secrets

I attend a Catholic university. It’s a really good school in my country. We have a required Theology class. We mostly keep an objective lesson but most professors can’t help but discriminate other religions and glorify Catholicism. I’m okay with that and can keep up with the lessons. I also do well in objective-type quizzes and recitations. But there are also instances where we have to recite our opinions on certain issues and of course the role of religion in it.
I never get a good grades when it comes to those kind of questions. They say I don’t “glorify” the religion enough. On one essay which asks us to describe our personal relationship with God, I gt a really low score for simply saying I respect religion but I don’t subscribe to it.
Do they have the right to discriminate against me like that? What am I supposed to do? Lie?