Riddler, the best advice I can give is what the Admin said. While I have never had an interview, I have done state-level presentations, which I guess is similar because at the end they ask you questions. The best thing I recommend from such experience is to be yourself, dress nicely, listen, be polite, keep eye contact, etc. Just the small things like that make a big difference. Then practice, of course. Write up a list of questions they might ask you, even google the interview online and see if you can find sample questions. Think about these in your head, answering them completely and with confidence. Stand in front of a mirror and ask and answer these questions as you would if you were in front of the real people. Have your parents or family ask you the questions in the same way. 

And as Admin also said, really think about why you want to go to the school AND also what makes you more qualified for attending the school than the others. This might be a hard question, especially since you are going up against Kestrel as well. Just remember, the judging is fair, so whoever gets it deserves the place.

And the most important thing: Be yourself, smile, take a deep breath, and have fun! I mean, as fun as you can make it. :D 

I had an interview before for a scholarship. My advice to you is also what the Admins and Ashlee said. Think of answers to questions ahead of time so you're prepared. Some questions they might ask might have to do with the way you have responded to conflict with authority before, or past leadership experience. It seems to be something that people on applications and in interviews seem to care a lot about.

Relax. It's going to be OK, and it's going to go great.

Here are some questions they are likely to ask you:

1) Why do you want to go to this school?

2) What community service have you done in the past?

3) What skills do you have that would allow you to succeed in this school?

4) Describe your participation in a collaborative effort.

Oh, and make sure to slip in facts like you are a leader, or you manage time wisely, or you think outside the box and things like that. I just went through an application myself (to a science school), so I feel ya. THE RESULTS COME OUT IN MARCH AND THE WAITING IS KILLING ME!!!

Good luck! :D 

RELAX! DONT GET STRESSED! At a private middle schol that I went to (and regreted it) they asked me if I was a fruit, what would I be? SO ya, just thought I'd share that! The questions can be random! 

You just gotta act confident, show them you got this, dress nice, use common etiquet (XD that I personally don't posses), AND JUST BE YOURSELF! After you're done, shake put your sholders, and go get yourself a nice scoop of ice cream to cool off your nerves, then maybe go to a movie or shopping or read a book, whatever makes you relaxed. AND WHATEVER YOU DO, DON'T DO YOUR HOMEWORK AFTER! (that' s just too much stress!)

Oh, and public high schools ain't so bad! You get to know what College is like, make new friends, (have bfs, which ya know, can't be that bad?) meet new people, hang with old friends, and I don't know about where you live, BUT MY SCHOOL LUNCH ROCKS! Sooooo much better then than middle school lunch *shudders* THEY HAD MEALWORMS IN THE COOKES! Oh, and my friends and their siblings all got food poisoning/samonella poisoning more then once. I TOLD THEM THERE WERE WORMS IN THOSE COOKIES! *shakes head* Anywho, you shouldn't be afraid! High school is soooo much better then Middle school! 

AND GOOD LUCK ON YOUR INTERVIEW, YOU SHALL ROCK THIS! *pumps fits*  

Wow, congrats, Riddler! I've done an interview before for a private school, and my best advice is to be yourself. Dress up nicely, and try and make some friends, if you don't already know everyone there. Don't worry too much about it, and don't overthink any of the questions. Good luck! 

Wow. Congrats, Riddler! That is super cool. 

My advice:

BODY LANGUAGE! This may sound stuffy and old-fashioned, but posture is SO important. I once did an interview, and the first thing the interviewer commented on was my great posture. Eye contact is invaluable. Be sure to look him/her in the eyes when you speak. 

MANNERS! Nothing locks in every impressive skill that you have, Riddler, than minding the old 'p's and 'q's. Address lady interviewers as ma'am, and male interviewers as sir. Make sure to show respect for your interviewer. 

FIRM HANDSHAKE! Fun fact: many people will judge you at first impression by how firm your handshake is. President Franklin Pierce had one of the weakest handshakes in White House history--critics compared it to a 'wilted petunia'. It was so bad that aides took to hustling him out of the room at speeches, so that they couldn't see how wimpy his handshake was! My point being--during the beginning and end of the interview, make eye contact with the interviewers, and shake their hand firmly while smiling. 

IMITATE BODY POSTURE! People feel more compatable to people who are similar to them. When you enter the room, take note of any body positions, and subtily mimic them. (Don't try too hard, though!)