Do they talk you through your report or is it just like you hand it in and they'll look at it later
You pretty much hand everything to them and they look through everything. So you kinda just sit there awkwardly for a few minutes while they look through your report. They may make a few remarks, but my interviewer was silent.
Question: are there any mistakes you could make in the interview that might cost you being accepted? During exhibition night I chatted around and many year 10s said as long as you could convincingly make things up, you were all good.
Ahah, not surprised that they told you that. Obviously, you want to seem like you care about the school. If you act all grouchy and "urgh-whatever-I-only-tried-out-for-this-school-because-my-parents-forced-me-to" , then you shouldn't be surprised if you don't get into the school. Be friendly and speak confidently. Be logical, concise and passionate about your responses. I'm not really sure how good they are at reading people, but I guess most people did bs their way through the interview. Still, being genuine is a lot easier than bs-ing.