We talked about doing this at one point in time. It's a good idea, if you have the money and the supplies to do it. You'll need a full field to actually run matches on if you plan on having everyone build robots, too. It's no fun if you don't get to see how your robot does!
Make sure you have plenty of support from mentors or alum if you want to try it. That kind of knowledge will be helpful.
Here are the rules for all games, dating back to 2002.
http://www.usfirst.org/roboticsprogr...t.aspx?id=4094