1. While we don't have an attached hospital, there are opportunities outside of the school. There's a committee setup to help you find research in different fields. The most common clinical research is done at Russell Research Institute at Lutheran and Sinai. For Ortho, there are connections with Illinois Bone & Joint. No idea on Derm research. I do know a few people who delayed graduation for a research year in order to get into more competitive specialities.
2. I believe you have to apply for scholarships after M1 year.
1. In my opinion, too many mentors. You'll have an older student as a mentor, a faculty mentor, a community physician mentor. The quality of the mentorship is dependent on how much you want out of it. You can opt to have the very minimal and do your own thing, or you can get very involved.
2. Classes end first week of May. You have until mid-June-ish to take Step1. It has to be taken before starting clinicals (July start date). Classes are stacked early M2 year and taper down starting Jan/Feb. There are many resources including structured group study sessions, shelf exams, and old NBMEs. The school provides Firecracker starting M1 year with class discounts on other board material (sketchy, UWorld, Kaplan).
3. There's a lottery/ranking system for clerkships. Most students want to go to the city, but there are rotations in the suburbs too. There are pros/cons for every hospital and depending on which clerkship, there are ones better than others. The best way to find out good/bad sites is to talk to upperclassmen.
4. Wide range depending on the specific lecturer. I'd say M2 year is more structured towards STEP1 than M1. I'm okay with them teaching more than what's in First Aid. I've had questions come up in UWorld that were not in FA, but were covered in class.