Writing is such an amazing thing that has existed it importantly involves the representation of a language with symbols and ways to express ideas . Song lyrics and stories in a readable form.Revising to me is important in a way to practice your mistakes and not to make it again. But also to notice your actions and how your thinking. So basically someone that is revising your paper can make you see your mistake more than you can yourself.
English class is for discipline i can say to teach us and correct us and mature us !