Getting into nyu gallatin?

i really want to go there....its my dream school but i really screwed up. im going to be a junior and my gpa sucks i didn't try and im trying really hard now my overall gpa is like a 3.2 which i dont understand because the lowest gpa i had all this year was a 3.4 and my highest was a 3.8 :( next year i hope to bring it up to a 3.5 with my aps and do well on the act. any tips to getting into the school i am so determined and know exactly what i want to study its the perfect school for me.