Listening to music through headphones in class should not be allowed. It is not only rude, it also reduces marks on anything that you’re doing and reduces concentration. Multiple studies say that listening to music through headphones in class reduces marks if you are sitting tests or exams. A study done by Doctor Nick Perham, a lecturer from the school of health sciences at the University of Wales Institute in Cardiff, showed that music with variations in sound reduced performance. When people were listening to music through their headphones, whether they liked it or not, the results were the same, and both were worse than when it was quiet.