Basic Apple
Configurator
Preferences
Apple Configurator  Preferences…
Choose Set… next to Apple ID
Enter your district-provided Apple ID and password. This must match the
Apple ID you used to authorize iTunes.
Your Apple ID is now set and all devices will be configured to this ID.
Choose the Lock Screen Tab.
Choose either iPhone for iPod Touch or iPad.
You can choose to have no text displayed on the home screen, the device
name designate when you prepare the devices, or custom text.
Drag an image (I put the image on the desktop for easy access) to the
preview to set change the background.