Class plays an important role in students’ success. Three characteristics of a good class are nice friends, a knowlegeable teacher, and modern technology. Firstly, the most important for a good class is a knowlegeable teacher. Students can absorb helpful information from their teachers’ wide knowledge. It can be said that a teacher supports 50% for students’ success at school. Secondly, nice friends also make studying to become more interesting. They can share anything together, even happy or sad things, help each other to improve studying ability. Finally, if a class has modern technology like computer, projector, etc, studying is becoming easier for students and teachers. They can save a lot of time, or get information quickly through the auditory and visual illustration. In conclusion, nice friends, a knowlegeable teacher, and modern technology are significant factors for an ideal class. Students can improve their ability as much as possible if they have an opportunity to join in that class.