Remind is a great way for me to communicate with the whole class, or just one individual. I'll occasionally send out messages about upcoming events or send out important announcements. Although the communications I send out to the whole class are public, the conversations between us individually are always private. If you haven't signed up already, it's easy to do. Just text the number 81010 in the "To" box, and then type in the code @backen in the message box.
If you click on the cloud, you can get the app for Remind so that you can send and receive messages on your phone.