Thanks for the quick response.
I think I may have come up with a reason that it is done with a network deployment.
When students logon to the computers, which are in a frozen state (any mods a user makes are removed from the system on restart), when the student logs in a profile is created for them on the pc (I know, its stupid to create a profile that will be deleted on restart they won't let me change it though). If a standard install is used I can not customize some of the file locations and paths, where as by using a network deployment I can change the paths and file locations that would go into the "users profile", and change them to go to the ALL USERS profile. Saving login time for profile creation.
Darn, that sucks because creating network deployments takes forever !!! 😞