Here's a good guide to a social resume:
http://brazosvalleygreeks.blogspot.com/
(This is from the Brazos Valley Panhellenic Alumnae Assn. -- that's the area around Texas A&M.)
No more than 2 pages & I would paste your photo in there too.
If a HS Senior is visiting any university, I advise them to stop by the Panhellenic Office (great way to meet the sorority members who work in the office), as well as go on a campus tour and ask for someone Greek as a tour guide (great way to have a conversation about Recruitment).