Dropbox is the best way to share and back-up docs outside of Google drive. Some limitations but overall worth it!

My Take

As a teaching tool, Dropbox serves a purpose, albeit, a limited one. It allows students to "drop" files in shared folders with other students and teachers. It also allows teachers to put files in these shared folders that they want students to have access to. This can include class information and assignments, but most importantly, it's a great place to put large files that you normally can't e-mail or share. But that's where the functionality of Dropbox for students ends. It probably is a better idea to use a Wiki tool for sharing files and collaboration. But if a Wiki is too time consuming and doesn't meet your needs, using Dropbox to share and accept files is a great alternative to use with students. Now, the beauty of Dropbox for me as a teacher is the ability to keep all my files in Dropbox folders and have them installed locally in every PC, laptop, or tablet (not entirely stored locally but still accessible). This is a huge advantage because if you lose internet access, you can STILL access the local files. I have instant back-up of everything I do. As an online and local storage space for my school files, it's perfect. As a collaborative tool for students, it's just OK.