How is Harvard supposed to know?
Harvard’s application deadline is on January, and the AP exams I plan to take on May, during my senior year. How are they going to know if I even took the test, how will they know even if I become a Valedictorian.
They sent their decisions on May1
Well it will show on your transcripts that you are currently enrolled in AP classes so they will be anticipating the arrival of your scores (which you will have to send). And also they keep tabs on every student they accept. So, unfortunately, you being Valedictorian won’t have much baring on their decision especially since their deadline is way in advance from the time you actually discover your position as Valedictorian.
But kudos to you for even having Harvard as an option.
Good Luck!
transcripts
You can send the test scores to Harvard.
Being valedictorian will show up on your transcript (since your class rank would be "1 of X amount of students").