I am off campus this morning (with Brandon Poulin from the middle school) for the MLTI workshop on Standards, Assessment, and Mobile Devices. Given that I'm here to be the messenger for all of you, and the fact that I said I'd report back from my training when I filled out the conference request form, I'm going to be taking notes on my Google Drive for those of you who are interested as well as tweeting out sites that I find to be interesting @SusieTechIntegr. The Google Document itself is embedded below.
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: