As I said earlier writing a paper on something you disagree with is a normal thing, so you are hardly losing your rights. As for your handing out of religious materials think of it from the schools perspective they don't want to be seen as supporting a religion, so they don't allow students to hand out religious materials, no one can stop you from handing them out off of school grounds, even the schools a public property they have more rules than everywhere else. For example I can walk down the street cursing all I want, but you can't do it at school.