The National Space Society has a post that oddly enough is dated November 28, 2007, on the NSS/NASA Ames Student Space Settlement Design Contest. Here's a link to a post I made on last year's contest. Since the NSS article will eventually scroll off the end of their page (so presumably my link above will eventually no longer point to the right place), I'll make a copy of it here:
NSS and NASA wants you to design your best space settlement -- a place in space for you, your friends, and family to live, play and work. Space settlement is excellent thematic and many teachers have used the contest we great success (see www.nss.org/settlement/nasa/teacher/ for lesson plans). In accordance with a new Space Act Agreement, NSS and NASA will jointly sponsor the long-running annual NASA Ames Student Space Settlement Design Contest. Sixth to twelfth grade students should create their space settlement design, or short story, or artwork, and send it to NASA Ames Research Center by March 31st. The grand prize winner will have their work hosted on a NASA web server and NASA will nominate a contestant to receive the NSS Annual Student Space Settlement of the Year Award at the ISDC conference in Dallas this spring. For more information: www.nss.org/settlement/nasa/StudentDesignContest.html