If you try to change your student computers’ display name in your admin console and it fails to change when you select something else, try the following:

go into the registry the setting can be found in [HKEY_CURRENT_USERSoftwareNetopVision6ConfigurationShell]
 The preferences key will contain a value looking something like:

"Preferences"=dword:401009df

Value 401009df is for the first Display option, 401019df for the second, 401029df for the third and 401039df for the 4th

If you change the value from the incorrect value it holds in there currently, to the way you wish for it to be, it will retain it until you change it. Each time you change it, it will have a chance to revert back to the problem, re-applying the fix will resolve it until a software update fixes this issue.