I'm meeting with a team at the high school and one of their questions was how to set up Gmail as the default mail client. Then when you click on an email address it would use Gmail to send the email instead of the Mail client on your computer. If you are in the same boat, then click on the graphic below to check out HubSpotBlogs article on how to do it on Firefox, Chrome, Safari, or Internet Explorer.
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: