How I Use It
I use it to give my students supplemental practice on math problems, extra reading that might interest them and share fun things that go on in class. I'd like my students to contribute more, instead of me being the sole contributor, but it can get a little hairy with making sure that everything is audience friendly.
I also use it to share resources with teachers at my school, and it has worked alright. Some teachers don't have the space on dropbox, so that is sometimes a limiting constraint.
Dropbox is a great file sharing tool, but requires quite a bit of technology savvy for everyone to be on board. Also, not everyone of my students had access to a computer at home. In an ideal world, I could share with them fun things like pictures from class, practice worksheets, articles and even audio files for them to listen to at home. The truth is that file sharing and the cloud is not something that is easily grasped by young students. Also, it requires students to take on the load at home, which isn't something that they're absolutely enthused by. I found that with lesson sharing, I could do this with teachers at my school, but I'd want something that was more graphically appealing and user friendly.