I have been using Remind.com to communicate with students since last year. Its a great service for teachers to use to send students reminders about homework assignments, artwork due dates, and art show dates. The service sends a text message (or email) to the students and the best part is that your number remains private. It is one way commuication, so if you have a question for me you will need to email me, you can't text me back. I just got this email from them the other day.
I hadn't realized that I had sent that many reminders. If you haven't signed up yet, find your class code and the instructions on the bulletin board in class. Parents, if you are interested in receiving the texts as well, send me an email with you child's name and student number and I will send you instructions.