I don't hide the fact that gamification of the classroom intrigues me. I post a lot about it here on my blog. This week I started a Coursera MOOC course called Gamification, which is being taught by Kevin Werback through the University of Pennsylvania. Although a number of the participants are looking at it through the education lens, there are also a number in the business world who are intrigued enough to enroll as well. So far I've watched a number of lectures within the course. But this video on YouTube that was referenced was good enough to share. If you think you can ignore the power of gamification, this video may change your mind.
I had a teacher ask me if there was a way to hide or remove students who are no longer in your class. The answer is maybe. It depends on if they are officially dropped from your class and appearing as red in your roster and gradebook. If not, then no, you cannot remove them until they have been unenrolled from the class. If the student is showing up as red in your gradebook though, you can hide them so you don't have to worry about them. Here is a screenshot to help you do it: