If there is one way to make a professor mad it’s to show up late. Some professors will tell you that if you’re going to be late you should just not come at all. They find being late disrespectful and detrimental to others in the class.
One professor was dealing with not just one student being late, but his entire class. Everyday people would show up five minutes after the class started. Well he cam up with a genius solution.
Everyone Was Late To His Class…Until The Professor Posted This On His Door