Educational communication can be approached in terms of „action” or „influence” undertaken by teachers to determinate changes in the students' personality. Teachers are persuasive agents who pursue clearly defined educational goals. Teacher's intention in constructing a argumentative discourse is not only to communicate solutions to problems addressed, but to lead students to share these too. There is not about obtrusion or constrain. In educational field often the outcomes depend on the success of persuasion, which plays a important role in interpersonal behavior. Teachers seek to persuade students to accept their messages or these are worth for their personality development by using verbal or even nonverbal techniques. Children do not accept unconditionally teachers or parents' messages. They need to be persuaded for addressing an academic topic, behaving in a certain way or involving in various activities. Therefore, we consider persuasion as an effective way for desirable changing in people' (students) activity and behavior who conscious receive, process and accept a message communicated by a influential source (teacher).