I looked at just University career help sites and (I swear it was random) found a great page from the University of Boston. I know it has helped me so far. I'll probably post (a censored version of) my resume once I have it reformatted and updated.
December 17, 2008
Creating/Updating a Resumé
So I was working on updating and reformatting my resumé and while it is easy to find plenty of varied advice, it took a minute to find information specific to being partway through University. Most general and new college (university) graduate resumé advice sites say to leave off high school activities...but it would be pretty hard to make an attractive resume based solely on the last three months.