The “from” field contains the name of a known Vassar user.
Vassar uses Google Drive frequently to view documents.
The body of the email looks exactly like a valid Google Drive invitation.
Why this is phishing
The URL, or link, contained in the message is not Google.
The link opens to a site with multiple providers, including Adobe and Google.
When viewing this message in Google and clicking on a valid Google Drive share, you would never have to choose Google from a menu or input your login name and password again.
Additional notes
If you know the person who appeared to have sent the message, call them and ask if they sent it. It only takes a few minutes to verify if it is legitimate.
Report it as phishing to Google. Before deleting the message, make sure to click on “report phishing”.
A little paranoia goes a long way! Be suspicious of any email messages similar to this one.