can someone comment on the college system at hopkins? i heard a little about it at my interview...
The colleges are meant to be social and an opportunity for vertical advising. You're randomly assigned to one of four colleges, Harry Potter style, and from there on you take as much advantage of it as you want.
The main way you'll be involved with your college is through clinical skills. You, three of your college-mates and a faculty preceptor will be grouped together pretty much day one of med school. Over the next year and a half or so this group is where you'll learn to interview patients, do a physical exam, etc. Your preceptor stays with you all four years and for a lot of my classmates has been one of their go-to advisors, especially early on before they've settled on a specialty. The faculty who work with the colleges volunteered to do it, and it's pretty intensive for them, so you get a lot of people whose primary reason for being an academic is being educators.
On top of that, there's social activities within or between the colleges. Lots of potlucks, trips, poker nights, things like that. There's a college olympics thing they do that's pretty fun, lots of tug of war and kickball. They also organize volunteer activities through the colleges, mine works with a meals-on-wheels type soup kitchen and gets students together to help them out, particularly around the holidays.
Aside from just hanging out and having a good time, the main benefit of these activities is that you get to meet some upperclassmen, who can help you with the nitty-gritty of med school and residency applications. Honestly, it's a relatively small school so you'll have no trouble meeting upperclassmen even if you never step foot at a colleges event, but it's just another excuse to meet some people you can ask questions.
The colleges also each have an individual space in the Armstrong building with a kitchen, couches, TV, and places to hang out or study.
So basically, aside from clinical skills, everyone is involved in the colleges to a different degree. For some people organizing all of this stuff is one of their main extracurriculars, for me it's an opportunity to grab free food sometimes.