What is not accurate exactly? I did not say when the OP had to inform the school now in his app or if at all potentially, that is up to the OP. If he does not inform them prior to drug testing then it will raise a huge flag that could result in being booted IF he is taking certain meds (if he's not on those meds then that specifically is a non-issue, as not all ADHD meds will pop on a drug test). I didn't specify meds as that is between the OP and a psychiatrist. They specifically ask if you are on any medication that might interfere with drug testing and you must disclose such, HIPAA or the ADA doesn't protect you from that. Going back later and pursuing accommodations after failing classes is a poor strategy to get support under the ADA, court cases have proven that. Some schools actually have support programs in place to aid those with disabilities so that they can succeed and hiding a disability means you don't get those supports. So there is no simple yes or no answer as to when, if, or not at all.