Last year we communicated via email. This year at her new school the teachers have this app that allows them to text all parents as a group for reminders and whatnot. The parents can opt in and then use the phone number given to privately text them back. So the messages from the teachers go to all the parents, but if we reply it goes to just them two. We can use it for any concerns or to even let them know if our kids will be absent that day. I think it's a really neat idea!

Of course email and phone is still available as well!