I took a quick glance at your website. From what I've seen I noticed that first, it took a while to load your header.
In the "First History" There is a huge paragraph, which should be broken down, as well as have the "wikipedia numbers" removed, as they are no longer working links on your page as they were on Wikipedia's.
I would cite the game animation on your page. For example put: "This video was made and graciously provided by FIRST."
Finally, I noticed that one of your images (http://channelcats.rivercityrobots.org/Awards.htm) the 2006 Safety Pin, has a weird white area around the image. Maybe make the image a .tiff to have a transparent background.
That's all. I wish you the best of luck in the Website Competition as well as the Game Competition. Hope this helps!