An early start to get into Penn

<p>I have just completed my Freshman year at high school, very anxious to apply at Penn in hope of pursuing a later career in medicine. Those of you who are attending Penn now, may I ask what made you stand out in your application? E.g. # of APs, SATs/SATs II scores, ECs, GPA @ High school, class rank, volunteer experience, etc.
Also, how important is volunteering? I commit to community service on a regular basis and I am volunteering at a hospital overseas this summer.