At the other extreme, because of beauty, many people pursue it, and because of vanity, playing in it delays their studies.
The art department you are talking about is not beautiful and doesn't study well, but beautiful and doesn't study well. In our environment, the good part will study art, and how can the ugly part enter the art department, so the environment has created such a collective. For an inappropriate analogy, why do you think the rat nest is full of rats? Because this is a mouse's nest, if he has a cat in it, it is called a cat's nest. Similarly, of course, the art department can only find a large number of beautiful and poor grades.