With all of the students in the middle and high schools with laptops, our need to copy should be going down a ton. If you already have something on paper and you want to get it out to your students, the easiest thing to do it scan it with the copiers and make it in to a PDF that you can then share through email, Google Drive, etc. Here is a Google Document that I made to walk you through how to do it. Instead of hitting print to have a printed copy of them, I would just bring your laptop with you and follow along on your screen as you go through each step. It is so easy that you'll get the hang of it in no time and then you won't need the directions!
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: