Reading over the school's website is a good start. If you're close enough to schedule a tour with the school - ever better.
Your next best option is to search these forums - they contain a ton of valuable, constantly updated information! When you search, remember that the same school might be called two different things: i.e. "Memphis" and "UT" and "Tennessee" and "Tennessee-Memphis" are all the same school (sorry Texas people, I know you don't like to acknowledge there is more than one "UT" 🙂). If you're still lost, you might search in the Dental Student forums about a specific school as well. Good luck!