This leads to the question of software sources. The vendor of the software may have some provision for rapid install if the software is purchased by an educational institution.
An alternative is to find suitable software that is portable.
Such software does not need installation in Windows, It just runs 'as is" and a shortcut can be placed on the desktop. This is often the case for free software under GPL where the authors doe not want monetary tribute. (But require your respect.)
(This is not the same as cross-platform software.)
Here is a list of things in the category:List of portable software - Wikipedia, the free encyclopedia
The above list is by no means complete, yet it is very impressive and can be of great value in an educational institution. Some of these are GPL, you would have to check to be sure. Under preset interpretations of copyright law even public schools are subject to license restrictions of copyrighted material.