Additional information common app

<p>Hey guys, congrats to all you guys that applied ED. I'm finishing up my common app to be sent out soon...and im a little perturbed by the "additional information" section. Ive been told mixed things about it...that you can write anything you want, that it's only to justify bad grades, etc. </p>

<p>So maybe you Ed'ers can help me out a little...my essay is pretty good, everyone that has read it seems to like it (p.s. any one wanna read mine?)...but what should i put in my add. info? i was thinking maybe put the context of my grades that i recieved and etc. (like my school's ranking system and policies on grading scales and stuff) and maybe provide more info about the context of my essay??
i know that everyone is unique and there is no exact method to gettin into WashU or any other school, but what do you guys think is the best combination to put in my add. info that would show who i really am and impress the admissions guys at WashU?</p>