For the most part people gotta relax during the interview. They are looking at how you handle situations such as catching a student in your class cheating, how you handle stress and what you've done for research on this career. For example how will you handle shift work. Also get as many pre-req's that you can to show that you wanna get in. Get class 4 with air endorsement, get first aid, take as many medical or fire courses as you can if possible. And for petes sake dress up. One guy showed up in ripped jeans, t-shirt and sandels. This is a professional interview. May even be a panel style with a couple of people interviewing you.