Use Remind 101 to contact your students, athletes and their parents to remind them of important upcoming events and changes in plan via texting. This works so well because your audience is likely checking texts much more regularly than email.
"Remind101 began at Michigan State University when Brett became overwhelmed and unorganized with his semester workload. The "AH-HA" moment came when he received a text message. Knowing students text message and email so often, what if a program could send reminders to students before their assignments are due?"
It is a perfect tool for any teacher who wants to more efficiently disseminate information.
If you like to compare and contrast try ClassPager as well.