I primarily use Khan Academy as a math teacher, but I have a few students who use Khan for other subjects.  Can you add a way on the student progress page for me to see how much time they have spent inn total for a specific course.  Right now there are 3 drop downs for: 'Last 7 days', 'All content', and 'All activities' followed by exercise minutes and then total learning.  It would be incredibly helpful if there were a 4th drop down for the specific class.  

Thanks!