Andover?

<p>So I'm applying for Andover for the 2013-2014 school year as a junior (11th grade) and I was wondering what kind of chance I have of getting in.
•I'm validictorian
•Im in 5 clubs
-Spanish
-multicultural
-interact
-NHS
-Pinterest
•I pole vault and run for track
•I'm on the bowling team
•I speak Spanish
•I'm president of my class
Is there anything else that matters other than my interview and test? I haven't done either but I took a few practice tests and my average was 98%. Is there anything else that I could do to prepare?
Thanks!</p>