My university doesn't mention the accommodations; you have to find out for yourself. Basically my counsellor will write letters at the beginning of term to my professors, and then they will make the accommodations necessary (for me, more time to finish papers and assignments).

From what I've heard, though, many colleges in the States have an office for students with disabilities. I suggest you check with them and/or the college's counselling centre to see what accommodations can be made. I know that there are people on PC that have such arrangements; they'll be able to tell you more.