Revert to Original Settings in a Computer Lab

system back into a condition you want do a backup of the registry and set a restore point for that day. Do Not Erase them. Once your students get it all gunked up again, just restore the registry from the restore point and that will reset anything to do with the OS back although I would think a smack across the knuckles with a stiff ruler would make them think twice about violating those rules you have pasted on the wall/board/desk/under the keyboard.....

You can set 'permissions' to control the extra software and access to specific directories but then there is that ruler thing again....

and life goes on...

Jack (always been an obedient student) <-- notice to good grammar and spelling??

Depending on how much effort you're wanting/willing to put into this, there are several options.

The simplest is to not allow the kids to have admin access to the systems. Create a limited account that they can use, which will mitigate a lot of the damage they can do.

Another option is to get a disk imaging program such as Norton Ghost, and create a base image for all the systems. Then maybe before going home on Friday, or first thing Monday, you can reimage all of the systems so that they are back to that base image level. You can also do this as needed during the rest of the week.

The best, and also most complicated, method is an automated reimaging system. Where every time the system reboots, it's loaded with a new image stored on some controlled access system. Sadly, this is probably out of the realm of possibility in a high school setting. Though maybe you can pool your efforts with the main IT person for the school.

System restore won't really work for this sort of thing. It's a bit too limited in it's abilities. Same goes for "enhanced" system restore like programs, such as GoBack. You can either try to mitigate the damage they're able to do, just image the system back to some baseline, or both.

Windows SteadyState (used to be called the Microsoft Windows Shared Computer Toolkit)

Windows SteadyState in the Classroom

Using SteadyState in a school setting
Schools, computer labs and other learning centers use shared computers as teaching tools. A classroom might have just a few computers that all the students take turns using. A learning lab could be equipped with a larger number of computers to accommodate whole groups of students at the same time. Either way, it's important that an educational computer be configured just the way the teacher wants. The teacher shouldn't have to waste valuable teaching time troubleshooting these computers. Read more in our case study.

Teacher control
Windows SteadyState is flexible enough to give teachers the control they need over shared classroom computers. The Internet can be prohibited or limited to different degrees for different students. All management of student accounts and profiles can easily be performed by the teacher from the main Windows SteadyState console.

available at:
http://www.microsoft.com/windows/products/winfamily/sharedaccess/default.mspx

The real solution here is to use things like GPEDIT to properly lock your PCs down. Disable Read and Execution permission from The user temp folder. Disable IE "save to disk" feature. Disable changing IE default browser check, toolbars alteration, or taskbar context menus. Disable changing LAN settings, or disabling/enabling connections.

If you use AV and AS, put a password on its settings if possible.

Turn off unecessary services, for instance disable Remote Desktop is a good one to knock on the head, and automatic updates.

Downgrade the accounts to limited once you have played around with it till your pleased.

Password protect the Admin Account(s)

You get the picture.

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