There are many reports available in a teacher's gradebook, including an assignment grades report. 

Teachers can run the "Grades by Student (condensed) report through their gradebook:
  1. Teachers start from their Faculty persona
  2. Navigate to Classes > select class
  3. Click Gradebook
  4. Click Reports
  5. Select Grades by Student (condensed)
User-added image

The "E" next to the Assignment Grades reports means they are embedded reports. You can access all of these reports inside of a teacher's Gradebook.