Very nice design/layout/content. Loving it.
Only thing I noticed immediately was that
"Welcome,
to Niwot High's F.I.R.S.T. Robotics Club website! Our team is focused on learning as much as possible about engineering and technology to better the development of our Cougarbot which will be used in this year's F.I.R.S.T Robotics challenge in March 2006. Feel free to browse the site and contact us for further information."
had a horizontal scrollbar. Only icky thing I noticed with a quick glance.
I'm using FireFox 1.6, if that makes a difference.