How I Use It
I use this to share documents and other files with students and have them submit their work to me. I know many teachers are using Google Classroom - and I do as well, but using Dropbox paired with Notability works much better for me. The students can get a document from Dropbox, write on it with Notability, and turn it in to my Dropbox. My files stay organized and the kids have mastered this process.
My take is pretty much the same as how I use it. It is another way to do what Google Classroom can do, but works better for me because I have iPads and Notability. Without Notability, it would not be nearly as useful.