The purpose of this study is to suggest the method of writing of criticism classes by investigation the concept of criticism of classes and the distinct features of criticism of classes and the components of writing of them. It is easy for teachers to be good teachers. But it is not easy that people recognize them as an expert. Writing of criticism of classes is a good way to rebirth as a professional teachers. But teachers fear that makes writing assignments. Criticism of class is an acts of judging of values which are embedded in the phenomenon of class with educational forensics. These attributes get a teacher to know what writing assignments are, and this definition makes teachers no more to fear about that assignments. The second step is for teachers to teach the four internal components of writing of criticism of classes. They ar emotional, perceptual, intellectual, spiritual criticism of classes. The last step is to suggest the external components. So they make teachers to know the format and content of writing if there are any differences will be found. But the most important task is to reveal themselves in the classroom in mind and attitude of others which is also necessary to listen to criticism, and reflection which required the re-examination of his classes.