Well, I guess the nice thing about competition within a class is that you're competing with everyone else who is undergoing the same challenges, not what other people might be doing at other schools which have easier times to start with. I'm pretty sure we've still got people who have above 3.9's. And yeah, you take your boards after the first year is over, which is either normally during the break right before the Fall Term 2nd year, or during Winter break 2nd year. My understanding is that many dental schools take boards near the end of the second year. The way they've got it now, we'll be starting in the clinic with basic restorative work (easy fillings, etc) while still taking didactic classes in the Spring of our second year, and if you hadn't taken the boards before then... I'm not sure what you'd do, assist I guess.
And, as far as safety, (and this is me, having come from undergrad in Irvine, CA, which was last year's safest city in America) I regularly leave the school past 10 PM, and I feel more or less perfectly safe walking to the bus stop on Forbes and getting my bus to Squirrel Hill and walking home the rest of the way. Sure, everyone knows that somebody got shot or stabbed in front of Oh's a year or so ago - Pittsburgh is one of America's larger cities, stuff like that happens, but I would be inclined to say that I feel much safer walking around late at night around the school at Pitt than I would have at the other two schools I was accepted at, Howard and Columbia. Howard even told us that if we leave the school past 9 alone we should call for a security escort - it's not anything like that at Pitt.
As far as places to live, I'd say the safest area would be Squirrel Hill - it's a family area and it is kept very nice and is quiet. Next would be Shadyside, which is the more College Kid area of town, you hear about some petty crime here every so often, but that happens everywhere. Next would be North Oakland, but only the more southernly parts. Just about all of my friends live in Shadyside or North Oakland, and they all walk or take the bus home late at night, and they've never had a problem. Sure, you should never assume you're completely safe anywhere you are - you should always be aware of your surroundings at night and keep and eye out, but I consider most of the areas around Pitt to be pretty safe.
Now, some areas you SHOULD NOT look at: Oak Hills - DO NOT, I repeat, DO NOT get an apartment here, no matter how good it looks online. It's literally half a mile from the dental school, and looks amazing on paper, but when you actually look at it, to get home, you'd have to walk a few blocks through the Hill District, which is renowned for crime. Many people do decide to get apartments here, and we hear tons of stories of cars getting broken into, and apartments getting robbed. The Hill District is actually in the opposite direction of everything else, so you wouldn't even need to go through here for most anything. South Oakland - while not as bad as the Hill District, and while it still has some nice areas, most of the areas you wouldn't want to be walking alone late at night. Lastly, some parts of North Oakland you might want to avoid, most of the area is nice, but one or two parts are a tad shady.
Again, you shouldn't feel unsafe going to Pitt, most times there is a very heavy police presence around the school.
And to Panther, Officially, Intro to Dent is an amalgamation of valuable classes that will teach you a variety of things associated with learning how to be a great life long learner, scholar, and dentist. Unofficially, it's a class that's taught by a group of very well meaning, but unfortunately very badly organized teachers who teach a variety of classes that should likely have been taught as single or two day seminars instead of assembled into a class. This is also the class that has you shadowing in the clinic, so that part is nice. Also, on the positive note again, it is a huge grade buffer because just about everyone get's an A. You still have it in the second semester, but it's under a new name, "Health Promotion and Disease Prevention 2." My understanding is that Intro to dent will be only 3 or 4 units for you guys.
As far as what you learn, you've got Stats, How to Search for Journal Articles, Evidence Based Dentistry, Community Service and Outreach, Patient interviewing (actually very useful - they hire these actors who pretend to be patients and you can like pause and rewind them), some basic clinical skills (like how to put on a Dam and four handed dentistry), motivational interviewing, learning about smoking cessation, etc.