I don't know whether you should pursue this issue with your professors.
The problem that I see, is how are you going to be able to fulfill your duties as a nurse when you graduate, if you are already having trouble in school. If a pt codes or goes bad, no court or family member of that pt is going to excuse a delay in care because you have ADHD and need extra time.
You will also find that most jobs in nursing require continual and rapid learning, involving reading books, pamphlets, etc. While nursing school
may accomodate the "I can't learn from reading books" idea, few employers will. And chances are if you request "more time" to pass meds or a lower pt load, you will quickly find your employment prospects wanning, especially in a recession. It may not be "fair" but nursing requires a high learning curve and a lot of complicated work done quickly.
While that may sound harsh, nursing school is mild compared real nursing with its' time crunch. While the laws protect those with disabilities, it also recognizes that while "reasonable" accomodations must be made, the determination of what constitutes "reasonable" varies, when it comes to jobs affecting public safety.
I know of at least two gifted surgeons that now cannot perform surgery due to minor/moderate injury that affected some of their fine motor skills. One could say that they should be "accomodated" per disability laws. They retain their licenses as MDs but had to change their practice as they were no longer permitted to do the type of surgeries that they had done. The one that was senior and had worked had longterm connections shifted into a more supervisory role. The one that did not have that much experience, had serious problems in maintaining a practice.
The not being able to record classes is perfectly valid - many places do not permit taping.
The time to have properly addressed the disability would have been BEFORE you started nursing school. Doing so at this point may look like you are trying to gain an advantage. Yes, you may get extra time, but you find more than a bit of friction w/staff, classmates and hospital staff that may affect hiring decisions in the future, unfair though it might be.
(one of my nursing instructors found out through classmates that I had IBD, and spent an entire semester trying to convince me that people with IBD could not "handle" the stress of being a nurse. Fair it wasn't)