The teacher can be a potent factor in causing disciplinary problems. The teacher's personality has bearing upon the learners which stem from two aspects - the teacher's personal characteristics and his scholastic qualifications.
The physical characteristics include the teacher's personal appearance, poise, health, mannerisms, habits of neatness and cleanliness and well-modulated voice.
The teacher who is suffering from chronic disease, for instance, asthma or ulcers might be late or absent very often.