Google Classroom gets email updates for parents, Inbox summaries, mobile document annotation

Google today is announcing several updates to its Google Classroom cloud service for handling assignments, coursework, and grades.
And in the Inbox by Gmail email client — which is now turned on by default for people with Google for Education domains in which new features are automatically turned on — emails from Google Classroom are now grouped together, so it’s easier to deal with them all. Google has done something similar for email notifications from GitHub, Trello, and Goo