ZorinOS would be perfect for US schools, however, without the ability to run TestNav, most schools will NEVER adopt it. Currently, Pearson only allows Ubuntu (pure version) and Fedora. When launching TestNav, it blocks server access to other Ubuntu-based flavors of Linux, like Zorin. This is a shame! What would it take for Zorin to work with Pearson to get TestNav to work. Pearson is huge and is probably very difficult to work with.