It's great this came up in session. The student w/ disabilities offices are very helpful.
Contact your school's disability office to find out whether there is specific paperwork for your provider complete or if the provider can send in their own documentation being all that is necessary. They should let you know what all needs to be included in the documentation, and will include what accommodations you may need, such as requesting: notetakers, extra time for tests and quizzes, testing in a separate location, tests given verbally or computerized, etc., whatever may apply for your needs. It varies from school to school what their requirements are in submission of the documentation. Hopefully they will be able to help get you started with what meets your needs.