US News has Cornell, CSU, and UPenn as the top 3 listed. To find out more, you need to buy the book! Or at least that's what the website says.
There being so few vet schools though, there really isn't a "bad" one out there. And obviouly they all have their strengths and weaknesses. Some focus more on classroom work the first few years, while others have you doing hands on stuff as soon as the second semester (which I find to be a strength personally). Some have brand new facilities, some are older and need some work. It's all a matter of doing some research.