It's important to remember that you can research, brown townyze and argue for a particular ideology without agreeing with that world view. In debates, this is often called "Devil's Advocate". So don't worry if she's trying to "force her ideology upon her students," you'll soon realize that everyone does this in some way, from bosses to mentors to teachers to peers to parents. Learning about what a particular movement or group stands for, especially one as big as Feminism, is important to understanding why our culture exists as it does and what influence we have on our world. Like Tokthree said, the grade isn't about your stance on Feminism, but your ability to try and form opinions, as well as discuss the opinions of your peers, on issues that aren't black and white. So far, it seems like you have that part down, so the class should be an easy A. The reason the class might seem so biased is because there are many different topics that would work as a vessel for class discussion, but Feminism just happens to be one your teacher is most comfortable with. Her picking it might not have anything to do with indoctrinating you as a student, but more as a way to ensure she doesn't get caught up in the nuances of the topic so she can focus on teaching core discussion and debate skills. If the topic was, say, ethics regarding future technology, she might get caught up in the definition of what makes one a human, or if a self-aware AI would have rights, instead of helping direct the conversations in a way where students can understand that they need to define the terms they use, rely on evidence to back their opinions, and be okay with not having all the answers and just knowing how to ask the right questions.
That said, there is still quite a lot of inequality in the world regarding both women and men. It's very important that we don't diminish certain inequalities on one side just because the other side has inequalities of its own. Despite your preconceived worldview, I would encourage you to go into this class as if you were a feminist. Try to prove their arguments as best you can. Either your worldview will have been accurate and Feminism's arguments are too weak, or maybe they are stronger than you thought and you ultimately learned something. Either way it's a win/win. Just remember, school is for learning new ideas, not just confirming preconceived ones.
EDIT: Fixed some words. Also, some easy discussion points could be the lives of women outside of the first world, or issues regarding men and emotional/mental/loveual trauma.