@Brian: Thanks a lot for the good suggestions - I anyhow did most of what you suggested, before applying to the school. The reason why I asked the question here, was a experience I made in my former university. I asked some people during the interview, that was part of the application, very precisely about the content and course of the studies. They promised a lot of things, that actually never came true. So I'm a bit more cautious this time.
If I would have asked students back then I would have saved some energy and nerves.
But of course I agree with you, that a big part of the experience is related to the student himself, his own motivation and former work experience,...