Remind 101 http://remind101.com/ is a site that allows teachers to set up computer-based text messaging. The service is currently free, and in Beta test mode. Check it out!
CLASS DOJO Class Dojo http://www.classdojo.com/ is a web-based real-time behavior management tool for classrooms. Right now it is in Beta testing mode, but it might be worth a try to look at the site and see what you think. It is free to sign up, and it also allows you to use your smartphone to document and