At present, the problems found in the study are numerous. But the problem that we often neglect to do most of the problems from inside the classroom. In a classroom filled with many students. At least 30 people as a minimum. Among those whose children are not less predisposed to harass others. For example, audio, playing with friends, talking loudly, etc. These issues cause some students are unable to learn effectively. As a starting point the idea that the separation of these kids come out and separate classes with other students. I agree with this idea. And here are my reasons why I agree with the idea that Students who are noisy and disobedient should be grouped together and taught separately.