iPads and iPhones (and I would wager Android devices as well) have a simple feature called "Do Not Disturb". Since we have so many iPads here in CPS, I'll stick to that device. It's easy to set up and easier to turn on. Here's how you use it.
Step 1: In your Settings app, you'll see the option for "Do Not Disturb". Tap on it.
|"Do Not Disturb" menu|
|Set up your notifications|
|Reveal the control center|