Social networks, like forums, friendship sites, music sharing sites etc., are gaining importance in a quickly changing world. They are also becoming a current issue on the agenda of an ‘education’ sector who wants to be harmonized with the changing world. Social networks which students admire make educators think about how a speedy, pervious and structured Internet could be used in an educational concept besides its entertaining aspect. Activating these features of social networks may clear away the obstacles of a knowledge sharing culture which originated from existing organization concerned with the individual and technology in educational organizations. This research aims at investigating which functions of Internet are preferred by educators and recommends what can be done to develop a knowledge sharing culture via social networks at school. Data have been gathered from 13 teachers via semi-structured and open-ended questions. The instrument used in this study was the interview. The data were coded and transformed into categories. The results showed that teachers mostly use the social networks Facebook, YouTube and Google+.