I think if students do a hairstyle like they are interested in a single hair, and don't care to learn.Learning is not about hairstyle, but if he's interested, but the hairstyle. To learn, they are not well.
I think if I made his favorite student. He is interested in hair only. And ignore the class learning about hairstyles. But if they do, but the hairstyle. Learning is not good
I think if students do the hairstyle to like. He is interested in hair. And ignore the learning learning has nothing to do with hairstyles, but if he is interested, but hair school is bad.