Film School GPA?

I am a junior attending one of the top 20 schools in California. My grades have struggled for the past two years (3.1) and this year still(3.3). The APs I’m taking are World History at school and Bio and Euro outside of school. SAT score is average, 1480, 666 but I still have two tries left so it will definitely improve. SAT Subject tests will be taken as well.

Extracurriculars seem to be my strong point:
Congressional award
LOTS of volunteering
Long-term research project with USC Professor
Interning at District attorney’s office
UCSD Biology Internship
USC Directing Summer Program
School Broadcast team
Film Festival wins(Grand Jury Prizes and some categorical wins in several local and large festivals)
A bunch of clubs(MUN, Debate…)

And I’m planning 2 film projects that I’ll be working on with USC Professors and a production company in China, which I’ll be using as my visual supplements as well as entering into more festivals.
I definitely believe in my abilities in filmmaking and art, but how much do grades matter for schools such as USC SCA and Tisch? Would I be rejected solely due to my less-than-stellar grades?