I've just started using this FREE app / site and love it enough to recommend it as something to explore and implement at the beginning of the school year. This site allows me to enter in my student rosters along with either a phone number or email address so I can reach them directly on their devices. I tested it with my summer school class yesterday and accidentally set off a bunch of their text notifications at the same time, which was amusing. The other cool thing is I can create a separate list for parents to reach them when the students aren't responding to my messages or calls. This means I can text parents without using my own cell phone, and they can return my contact without having my personal information (this is HUGE). Anyone else using it? Please note that it's free and I am not selling this as a product, just endorsing it as a time and sanity saver.