After selecting the course from course page, click on the tab “GRADEBOOK”
From 'Progress' menu select “Grouped” or “Sequential” 
Grouped: The location of the bar shows what percent of the assignments are completed and the assignments are grouped according to the grade intervals. As shown in the image below, the grades are color coded. For example, john@snow 30 completed 33/36 assignments and they did excellent in 26/36 (green) and good in 2/36 (yellow), satisfactory in 2/36 (orange) and poor in 3/36 (red), and didn’t attempt 3/36 assignments.
Sequential: The assignments can be viewed in the sequential order that they are created. For example, the progression of John Snow 30 (the same student as in "Grouped") can also be seen in sequential order.
Remember you can always click on the student’s name to see more details on the student’s overall progression in a course.
Remark: This process can also be done at the assignment level to see the students’ progression in a single assignment. Note that the interpretations of “Grouped” and “Sequential” are the same.