Google Drive File Stream is a flexible sync tool designed for G Suite for Education users. Similar to using a network share drive, it makes your Google Drive available through mounting your drive, giving you access to your entire drive while you're connected to the internet. If you're concerned about not having internet access, you have the option to make specific folders available offline. To do that, once installed, you would navigate to the folder on your computer, right-click the file or folder you wish to make available offline, and select Drive File Stream > Available Offline.
Uninstall instructions are available here for Google Drive Desktop. Google provides help documentation for Google Drive File Stream, but feel free to reach out to the IT Service Desk if you have additional questions.