Sorry it's taken me some time to respond to you. Here are the answers to your questions:
1. There is no word limit, but winning entries tend to be 2000 words or less.
2. Yes, the contest is still running. In the past, we have only highlighted winners in our printed magazine, but this year, we intend to post them online as well.
3. Yes, all entries are considered each time.
4. Yes, you can submit stories that you've submitted elsewhere. Winners, though, may not have the article published anywhere else.
5. Your story can be about anything related to college, careers, or life in and after high school.
Hope this helps -- good luck!