This paper deals with teacher roles in classroom management. It begins with two outlines used in teaching process. They concern the teacher, what they can do, and aspire to, and a discussion of classroom management techniques. The outlines are followed by an expansion of many of the points made. Classroom management is included in a course on ESP because most of students will, at some point in their lives, teach English in school. The material is based on our own personal experience of struggling to become a teacher, and our interaction with students and our colleagues. Teacher’s roles take account of teacher’s classroom language, teacher’s responsibilities, and the criticism and the evaluation of teacher’s performance. The teacher who makes great activation of his roles in classroom, tends to be the top and the most first factor that improves classroom management and enriches learners’ knowledge. Quantitative method has been chosen because it provides statistical data from English teachers using questionnaire. Factual information was collected and arranged in graphs. The results were analyzed and compared with previous studies. The participants’ responses provided supportive evidence and were fully consistent with this study