There's more than just attachment support in this upgrade, as you might expect, and some of the improvements are meant as much for the corporate crowd as students. You can now open and edit OneDrive for Business notebooks, and it's possible to both lock and unlock password-protected sections if you don't want everyone peeping your content. Other updates let you shuffle the order of pages in a notebook, and (on the Mac) share them as email. The refinements probably won't improve your grades if you're headed to class in the next several weeks, but they may help you make sense of hastily-written notes when you're studying for a big exam.