The following article will show you how to enable Google Drive access in Schoology. Some steps may have already been completed for you.
From the Schoology home page, select the Resources section.
From the Resources section, select the Apps button.
Agree to the Resource App Agreement.
Select the Google Drive Resource App and choose Install.
Approve the app to access your google account.
You should now be able to use resources in your Google Drive in Schoology.