As a guardian, you can get email summaries about your student’s activity in Classroom. Email summaries do not include grades. For grades, ask your student or contact the teacher.

In email summaries, you can review:

• Missing work—Work not turned in when the summary was sent.

• Upcoming work—Work that’s due today and tomorrow (for daily emails) or that’s due in the upcoming week (for weekly emails).

• Class activities—Announcements, assignments, and questions recently posted by teachers.

If there’s no activity to report or if a teacher turns off email notifications, you might not get an email summary.

Get email summaries

To get email summaries of your student’s work, you must accept an email invitation from a teacher or administrator. You have 120 days to accept an invitation before it expires. You can unsubscribe from summaries or remove yourself as a guardian at any time.

1. The teacher or administrator emails you an invitation to join your student’s class. (Please contact the student's teacher if you did not receive an invite)

2. In your email program, open your email invitation.

3. Click Accept.
   If you’re not the guardian, click I’m Not The Guardian.

4. Click Accept to confirm.

When you accept an invitation, you and your student get an email confirmation.

Source: https://support.google.com/edu/classroom/answer/6388136?hl=en