Holli,
A structured interview process is much better should you ever be questioned on the candidate who was selected. When you talk about the 3 people doing the interview, I assume it was done as a group interview, which can be a good process. Another way is to have the candidate interview with multiple people separately and compare notes (de-brief) afterwards. I always prepare questions in advance which I ask of each and every candidate so that I can make a comparison. My questions are based on the job description. It is also important to prepare questions which are open-ended or which cannot be answered with a simple "yes" or "no."
In addition to the actual interview,it is important to make the candidate comfortable in the interview setting. That might mean making comments regarding the weather, did they have difficulty finding the campus, etc. If the office setting allows you to get out from behind a desk, it is good to do since that also lends itself to making the candidate feel comfortable.
Dr. Patricia Kapper