Boy, I'm glad I didn't go to school there!
I thought about one law school in frightening Detroit (and I loved the one semester I squeaked through at University of Michigan -- beautiful, uplifting place in many ways!) but I was too scared, so I went to school in a nice, peaceful, placid, tranquil place, instead. Why, I don't even hear gunfire most nights of the week here in North-Central Philadelphia ...
For one reason pointed out by other people in this thread (school rules strictly forbid it) I don't carry here. Other reasons: 1) I live in university housing, which has its own separate version (or at least reminder) of the same policy (Streng Verboten!) 2) Though I am a resident of another county -- most of PA has relatively sane CCW permit policies, whereby CCW licenses are given by county sherrifs on a shall-issue basis -- Philadelphia doesn't approve of CCW. I wouldn't want to go through the hassle of establishing that my school-year bunk isn't the home where my bills arrive, where I vote (or, this year, chose not to vote), etc.
Back to the topic at hand: Detroit Student -- if you do end up getting a handgun (and it sounds like you're serious about it, which is appropriate), there's one minor thing I've found to really like about my XD (vs. quite a lot of other guns) which is also a positive attribute for Glocks and certain others: a captive mainspring. That is, rather than an open-ended spring that flops about, a cohesive unit that's easy to squeeze back into place when you're done cleaning.
I find the site a little wobbly, but try the "field strip" view on this page to see what I mean:
http://www.xd-hs2000.com/disassembly/disassembly.html
Since I'm not gifted with great manual dexterity, this means more to me than it might to some people. I really like that this gun (and again, Glocks and some others are similar) has a dead-easy breakdown process for cleaning.
Mind the rules and regulations, though -- it would be a shame to get into serious legal trouble just because you'd like to be able to defend yourself in a rough neighborhood.
Cheers,
timothy