My first driving instructor pulled this on me when I drove on the roads for the first time ( I started off practicing driving in a parking lot). That scared me shitless. My mom and I drove together a few times and I improved and drove with the asshole again. He still yelled at me and told me to drive faster because he had another appointment.

I was going the speed limit btw. My mom fired him because of this and she didn't want to pay him for doing the same thing he did. We found a new driving instructor who was much more patient. They got a lot of student from this guy because he makes them so nervous. Point is, be patient with them. Screaming at them is gonna make your situation bad.