I tried the Disabilities office in grad school, but they didn't really help me. I think they help people with learning disabilities more. They said I should get all my assignments early, but the professors gave all the assignments at the beginning of the semester anyway. I wanted extensions because I had trouble getting stuff done on time, but they wouldn't do that.

I will say that I only had papers, not tests. I guess I could have got extended time on tests, but finishing tests on time has never been an issue for me.