If you’ve been diagnosed and on medication then perhaps you are on the wrong medication or too low of a dose. Was the director of the program aware of your disability? You might be able to petition the school, with the help of a psychologist, to explain you have a disability that is perfectly manageable when your medication is appropriate. Also, ADHD doctors and nurses are often steller as an ER doctor/nurse because if the highly stimulating environment. All of what you said is common to ADHD people and there are a lot of ADHD doctors and nurses. I would definitely go back to the school or try to find another school and explain the situation. That doesn’t seem right. After all, they have your money amd you dont have a degree 2 weeks before you graduate? Not right. You could even speak to an equal rights lawyer. There are other ways the school could have handled this. Keep pushing.