You can browse the Interview Feedback on here...It helps A LOT.
The interview feedbacks will tell you a sample of some of questions that are asked for a specific school (though many questions stated will be common and general, such as "why pharmacy"), what are some of the positive/negative aspects of the school after the student's visite and what you should expect, ect.
I also found the interview feedback helpful in my application process. The feedbacks often have student ratings of the school after the visit.
Also, you should research the school, do practice interviews, and have a few questions in mind that you would like to ask the interviewer after the interview (interviews often end with, "Do you have anything else you would like to know about the school?")
hope this helps and good luck~