We have shared ipads at our district, trying to get a the lock message to say "$room extensionattribute_3" (The EA is just a slot number on the cart where the iPad is stored). The room number shows up but the EA is showing up as $sextensionattribute_3. I know that it is #3 . Also it is is only showing up if the students locked screen, and is not showing up on the login screen. And its tiny , I'm thinking of scrapping the idea.
