They, of course, received worldwide submissions, but I was surprised at the number from Mexico - thirteen different campuses submitted. After some searching on Google's blogs, I found that they also ran a related competition with ITESM (The Technology Institute of Monterrey in Mexico), offering a separate prize for the best models submitted by their students. ITESM participants designed 111 buildings, representing 22 ITESM campuses. The winners are two students from ITESM's Santa Fe Campus.
Having students use SketchUp to create models is an excellent classroom design project. There are many objects along with entries and other projects in the Google 3D Warehouse which contains downloadable models made by the SketchUp community.