It's kind of a pain to get all the distribution requirements out of the way, but I was able to get out of about half of them with A.P. credits so that was really useful, although I'm not sure how much longer they're going to continue with that policy. It worked out nicely, though, to get all of my distribution requirements out of the way freshman and sophomore years and it allowed me to experiment with really interesting classes I wouldn't have taken otherwise. That being said, I am still quite happy I can now focus solely on the classes I'll be taking for my majors. There are a lot of research opportunities, and not just in the sciences as you might expect. I have a friend who is an international relations major, and he did research in Bangladesh over winter break our freshman year (he had been at school for 1 semester and still had an amazing research opportunity.) Not gonna lie, the workload seems to get heavier with time and I pulled more all-nighters this last semester than I thought possible. That being said, a lot of those all-nighters were because I spent time trying to balance an on-campus job and a social life with my school-work, but I think that fun-work balance is going to be a challenge wherever you go. And as far as study abroad, I think 40-60% of the junior class goes abroad every year. Tufts has some awesome programs, and you can do non-Tufts programs as well. Just be forewarned that the study abroad office tends to make a lot of things way more difficult than they have to be; they aren't very good about communicating and tend to leave things for the last minute.
Quality of Life
The dorms on campus aren't great, but I've found it's more about the people you live with than the building you're living in. Living on campus is probably more expensive than living off campus, but you're required to live on campus your first two years so you don't really have a choice. I think the most expensive part about it is probably the meal plan, but the food at Tufts is awesome as far as dining hall food goes. The library is one of my favorite places on campus to do work. It could be a little bigger - it tends to get really crowded around midterms and finals - but it is a really wonderful place. We get crime reports from our campus police somewhat frequently, because the surrounding areas of Medford and Somerville aren't necessarily the safest, but I've always felt really safe on campus. We have an open campus, but I've walked back from the library at 3 a.m. by myself (I'm a female) and I've felt totally safe. Overall, I'm very happy living on campus and I'm sad that next year (my Junior year) I'm going to live off campus. I mean, I found a great group of people to live with but I am just going to miss being on campus.