At my school, there's a counselor that works with students that have ADD, ADHD, and Learning Disabilities. There are several options that she offers:

(a.) Extra time on tests
(b.) Tests given by the teacher speaking the questions and the student gives the answer.
(c.) Extra tutoring.

Those are just a few. I don't know the others off the top of my head. Colleges usually accomadate those with ADD and ADHD but you usually have to have it documented by a doctor and the counselor has to have the documentation on file.