Nedda Gilbert, MSW, Educational Consultant, and Author
All the experts here provide sound advice. I will add this, unfortunately boring college professors are not uncommon. I can't be dishonest, there's probably plenty more to be found at that school. In fact at some of the most elite colleges, you may run into multiples. That's because there is a big focus on research, publishing and other scholarly pursuits. Being a great scholar or academic does not necessarily translate into being a great teacher. Some profs will even be a jerk - forgive me for saying so because just like anyone else - there are good profs, bad ones, and every type in between. The good news is that if you're with a great group of students - smart, ambitious, resourceful, supportive - bad and boring profs fade into the background. Your peer group will drive much of your learning and experiences, as well as help you figure out what that boring prof was trying to teach - yawn. You also have text books, the internet, study guides, a syllabus - each other - you'll learn what you need to.
As everyone else has said, don't put too much weight on the profs at a given school. They come and go - and every school has a smattering of the good, the bad, and the ugly. Focus on other features such as location, setting, strength of majors, unique opportunities, student type and make-up, and especially any experiential learning experiences, internships and career services.