How I Use It
I use RTM for the teachers in my department and our to do lists. We share items and stay on top of everything. It syncs well across all devices. Very easy to set up. It is pricey at $25 per year. I can't see a use for it in the classroom.
I can't see a use for this in the classroom. There are other apps for sharing to do lists with entire classes. As much as I like it for myself.