There may be three characteristics to form a good class. The first one is covering adequate materials. A teacher in a good class should cover the adequate materials which are qualified for the student’s level. If students take difficult materials which they can not cover, they may not afford to take the class. As a result, they should not be able to concentrate the class and may fail the class. Second, A good class should have adequate equipments. They may assist students to take class efficiently. To the specific, audiotory or visual equipments in the class may help students to understand easy enough the contents of lectures. Therefore, adequate euqipments will be able to make synergies for the students. Lastly, the thrid characteristic of a good class is the attitude of students and teachers. It is important that they be the biggest part of the class. According to their intention, the atmosphere of the class will be a good class or a bad class. Therefore, teachers and students should have responsibilies for the class and should have active attitudes in the class. If a class have three characteristics which I mentioned, it may turn out an ideal class.