How to return the PC to its original state?

Question

IT education

Hello, there is a classroom with 10 PCs on Windows 7, students study for a week or two, then new ones come.
How to implement the return of all PCs to its original state? So that you don’t have to clean every PC with your hands

Answer 1

create a disk image and deploy it before each new group.

Answer 2

You can make one server and make 10 computers virtual clients: each computer has its own user in Windows, then the user settings are reset or deleted, and new users are created.
If there is no system administrator and a server, you can start a new user group on each of the PCs with the necessary set of accesses and programs before starting.