for my interview, my BGO had me watch an 80's USNA video cassette (i think her only experience with usna was that her niece applied), after that she cruised through the actual interview in under 3 minutes. (i hope her interview didn't count for much in the application haha...) Her bad impression...
i would talk to the teachers i wanted a recommendation from. they are often really busy in the fall with other senior's letters, so being ahead of the game might help there. Otherwise just fill out that precandidate thing and you should be good for now.
my classes were geometry algebra 2 precalc and AP calc, no trig and i got a BFE. I think your good if your school doesn't offer it. the same thing goes with computer science.
My dentist recently told me my wisdom teeth need to come out. Do I have to update my Medical history? Or should i just skip the hassle (if there is any), wait and have it done at the academy?