The disadvantage of no special classes as a result of the student are not riayon, such as some students to study and do something else in school time. Don't listen to teachers make students do not understand the lessons.
Disadvantages of a special nut as a result of the student's intended area such as some students on to college and do something else at the time. Do not listen to the teacher The students did not understand the lesson itself.
Disadvantages of studying young as a result of that students don't classes, such as some students when studying and doing other things in the course of time. Don't listen to the teacher. Let students understand the lesson