You might want to consider the below rules for the area where you will be either learning, or teaching keyboarding. Food particles and liquids are the death of a computer s keyboard. Students are the least of your problems on this rule. It's the faculty that will dart into the room for a quick puff. Airborne smoke particles get into the keyboard and can cause key bounce.
Key bounce occurs when a key is typed and two characters appear.
Computer games are a distraction and disrupt the educational process. All equipment should be in working order with no extension cords lying about to create problems. Cover all windows, even if the lab appears to be too dark. Clean the work area. The floors, desktops, and the computer screen should be kept clean.