First i still see the entire exam of one student, not just one question.  Second I am not able to look at a grade all of one particular question for ALL of my students at one time.  This gives a more consistency in grading and makes it go quicker.  Clicking through each student for each question takes a long time for it to load and when you are talking about 15-20 questions for 61 students that is a lot of going to the top of the screen and clicking and waiting.