Because the teachers are professional and very important. So to qualify somebody to be an important person. Need to carefully interview first.
And the question is not "why do you want to be a teacher," he said.
Anyone who gets a recruit comes to ask why a teacher and provide an answer that showed lack of ideology, because they don't know any profession to become a teacher or find another job is not. If the answer to this is not worthy as it's.
But if I said "I want to be a teacher or teachers because they are so light, with the students and the world wants to give new life to the school children come later because he originally was not wise or clever just one level as obtained from your parents .....