School Teacher Question:

It is important to develop ground rules the first week of class, this allows the students to understand what is and isn't acceptable behavior.
These rules are discussed and agreed upon with the students, this makes the students accountability and responsible. You may want to touch on your philosophy of classroom discipline. This of course would depend on your style; you will have to be honest with yourself. But you may believe that you reduce negative behavior by offering the students a intellectually stimulating, organized, and respectful environment.
You will want to get an example of your plan; use a real situation to show your expertise in this very important area. Whether you use the red light/green light, time-outs, or removing the student from the classroom, it is important that you can back up why it is effective and use examples. You will want to explain why you feel the discipline action is effective and why you enjoy using it.