Twitter has really taken off for all sorts of uses in education. Teachers are using it as a form of PD, PLCs keep up with each other, and Administrators are using it as a way to communicate to parents and students.
The concern I always hear, "What about the parents who are not on Twitter?" Amber answers that question as well. Parents can text: "Follow @username” (without the quotation marks) to 40404 and you will start receiving tweets from that user on your device. You can turn off receiving updates by sending “STOP @username” to 40404. No Twitter account setup is required
What an awesome feature. Most people these days at least text message so this would be an excellent way to reach most of your building's community either through Twitter or Text message.