Installation on University Systems

I think that this will help to answer your questions about classroom deployment:

https://wiki.unrealengine.com/Unreal_Engine_4_-_Academic_Installation

There are two different ways that you can do the Lab/Classroom installation. The first is with the linked method, the other is what is describing, which is to make individual accounts for each computer with separate email addresses. Let me know if there is anything else we can clear up for you.