Communication among students and learning mode were significantly changed with the appearance of social media. Access to information is possible within small period of time through smart phones and Internet portals, and group discussions are simplified by forming online groups on social networks. These are just some of the features that can serve as an advantage in the classroom, on condition of implementing social media in education. The paper analyzes the opinions of primary school teachers (N=70) and high school teachers (N=78) on their habits of using social media in the classroom as well as on the improvement of communication in the classroom by using social media and social networks. Teachers' opinions were examined by questionnaire in several series of questions, which relates to the use of media for personal purposes, teachers' opinions on social media, tests the habit of using social media in education, the existence of conditions for its use, the reasons of possible non-use and self-assessment about their proficiency in the use of social media in the classroom and the time spent in training for the same. Responses were assessed by Likert scale of 5 degrees, except socio-demographic questions, and processed by the descriptive statistical method. Research results show existence of positive attitudes among surveyed teachers of primary and secondary schools on the use of social media in teaching. There are no significant differences in opinion between primary and secondary school teachers. Negative views of teachers are related to the implementation of social networking in education because it raises the question about abusing the way of communication in class, teachers' lack of social media education and for primary school teachers, obstacles in using social networks for most students. It is positive that there are tendencies with the teachers for using social media in the classroom, which can lead to the active implementation of social media, if the obstacles that are mentioned in the work are resolved.