[ Primary & Secondary Education ] Open Question : how to revive my school performance!?

NEED HELP, PLEASE: HI, I am entering 11th grade this coming year... i have slacked throughout my high school year... at 9th grade, my grades were in the lower 80's. At the beginning of my 10th grade, my grades were in the mid 80's, and at the end of my 10th grade, my grades were at the lower 90's. I am 100% positive that my grades at 11th grade will be in the upper 90's. Not to brag, but i am a genius in physics. I am now taking advanced physics and app coding. once again, not to brag, but im also extremely athletic, i broke the school push-up highest score (114). I am also a Muslim ( plz dont comment any stereotypes like, " your a terrorist") and i am also from the middle east ( yemen)... i wanted to ask: 1) if that will effect my chances of getting into top college ( i want to major in physics). i am aiming to enter colleges like harvard, MIT, Stanford,etc.. 2) what is the most important year in high school that colleges look at. 3)what is the deference between a top college/university and a regular college. and finally, what can i do to increase my chance of acceptance... such include advices about resume, SAT, application esssay...etc. plz answer at your best ability... THANK YOU VERY MUCH...

Source: http://answers.yahoo.com/question/index?qid=20130709145933AAJjQva

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