Facebook also has a role in the teaching and learning of teachers and students. Create a group in facebook, so that students and teachers have to communicate news. For this reason, the students and teachers have to add the user account and also many other reasons that students should not be a facebook friend, teacher, first from the news media that come out, whether it's the Internet or on television. It can be seen that in the present there is news that teachers and students for inappropriate conduct by adultery girls together. One of the reasons may be coming from facebook and talk through it is considered inappropriate behaviour and subjects that the two see each other in the most current when some students see a teacher says or posts may be to blame in some works. Some students have posted on their facebook down Professor taunting and aggressive behaviour, it regarded as very much, and it may be a reason why some of the students that teachers shouldn't be there as a friend on facebook, and on the other hand, the advantages of having a student teacher as a friend on facebook is when there is important news, whether it is financial news, students can learn from facebook or sick or discomfort when three students tell the instructor via facebook.