"You can choose how visible your files and folders are, as well as what others can do with these files and folders, when you share in Google Drive, Docs, Sheets, and Slides."
Google Apps Toolbox is a collection of tools which could be used to debug 'Google Apps'.
Most of the tools provided on this website do not require users to authenticate, but a few which require user data access may prompt for oauth credentials.
"This page offers performance information for Google Apps services. Unless otherwise noted, this status information applies to consumer services as well as services for organizations using Google App". If you're having difficulty accessing a Google Apps service you can check the status dashboard to see if there is an issue on Google's end.
"After Google Play for Education is enabled, only the Google Apps super admins have access. As the admin, you'll need to add teachers and set their level of access before they can use the store. There are four levels of access:"