I have a leaning disability, and I didn't think that I was smart until college. And I really only found out by chance. I took a literary theory course, and it turned out that I was really good at it, and that I'm pretty good a philosophical an theoretical thinking across the board. But that kind of thinking is really a struggle for most people, it's really just a fluke that I'm good at it. I really couldn't pass a spelling test if my life depended on it. Sometimes you just have to keep looking until you find out what you really are great at. Don't be afraid to be creative, and like other people here have said, just because you aren't good at taking the test, or writing the paper, doesn't mean you don't understand the subject well. I agree with Mastodon, it is important that your T understand your strong feelings about this, especially if you think that this is a core part of who you are.