Are you using a texting service to connect with teenagers?
The one thing that I have done right in the past few years is setting up a texting service. The best part about having a proper texting service to communicate with parents and students is that all the messages are received. It is unbelievable. I remember looking at the stats after the first text I sent out, and sat back and was amazed at the number that popped onto the screen. It said that 100% of the messages were received.