It is possible to distribute the activation information on the installed app for Windows, but only with some work by the installing IT group as described below.

An alternate way is to use the Progressive Web App (PWA) version of Graphical Analysis. If you have students follow a URL of the form, from the Chrome browser, they will be taken directly to the activated Graphical Analysis Pro app. Replace “yourkeyhere” with the license string you have been provided. This approach works on all platforms except iOS/iPadOS.

Another benefit of using the PWA is that no installation is needed; you need only provide the URL.

For the installed Graphical Analysis application (and not the PWA), the license key is stored on a per-user basis.
On Windows the activation is stored in:
C:\Users\USERNAME\AppData\Roaming\Vernier Graphical Analysis\Local Storage
On Mac the activation is stored in:
/Users/USERNAME/Library/Application Support/Vernier Graphical Analysis/Local Storage

If you activate Graphical Analysis once, and then copy that directory from your version of that folder to
C:\Users\Default\AppData\Roaming\Vernier Graphical Analysis\Local Storage
It will be activated for everyone who doesn’t have an account on that Windows computer already.
The easy way to this on old versions of macOS involved the User Template folder, but don’t do that on new versions of macOS, instead you’ll need to create a Launch Agent script to copy those preferences onto the Users folder.

If you’ve remapped that folder onto a network share, then copy it to everyone’s folder on that share.

Note that your license does allow you to give the key directly to students and have them type it in themselves, and in fact they can even use the same key to activate the Pro features on their phone and/or home computers. This is true of the PWA as well as the installed application.

See also:
How do I use the silent installer for Graphical Analysis/Spectral Analysis/Instrumental Analysis?
Should I use the Progressive Web App or native version of Graphical Analysis and other apps?
Graphical Analysis Troubleshooting and FAQs