Read the school's website, read this website, practiced most commonly asked questions.
What impressed you positively?
The students were all soooooooooooooo happy
What impressed you negatively?
?
What did you wish you had known ahead of time?
Everone there is so nice you can relax (unless you get my second interviewer)
What are your general comments?
This seems like such a wonderful school. My first interviewer was so great and we had the best interview, but then my second interviewer seemed to be grilling me and made me feel like she had right and wrong answers in mind and damnit I better say the right one. Overall, the day was nicely planned and there were opportunities to observe classes and meet with various students.