Ok. No DEP is going to be hard to achieve your goal. You may be able to set the profile to Never remove, or Allow removal with Authorization, and set a password. You could also create a Restriction to disable ' Erase All Content and Settings' . However, that can be easily bypassed by setting the iPad in Recovery mode and performing a device Restore. An option would be to use Activation Lock on the devices. DISCLAIMER: I tried to set it up a couple of years ago, but was not able to. Shortly after, I was able to setup DEP, so I didn't try again. NOTE: The iPads could still be wiped, but without the email address and password associated with the devices, the device is useless. The devices can still walk away.
