The school is legally required to accomodate you. I now have extended due dates, printed
class notes, the ability to leave
class to sleep or try to wake myself up. They can't hold anything against you that's a result of your sleep disorder if you have a diagnosis and an accomodation plan with the school. What I'm thinking about doing is taking some online courses in the summer as well, so that I don't have as many classes / as much work to keep up with during the school year.