It poses no difficulty to argue that the success of any nation depends to a large extent on the quality of her teachers. This is because the outcome of teaching, which is learning, manifests in all services rendered by the individual in all sectors of life. If the products of the school system do not learn well both academically and morally, they will not perform well in their duties, since all industries are run and survive through the services of those who passed through the school system. Whatever they do in their places of work tell much on the knowledge they have acquired from the school through their teachers. Bearing in mind the role of teachers in the promotion of intellectual upliftment and social responsibility (Ethics), this paper examines Teacher Education in Nigeria, professionalisation of teaching, and the need for the moral training of teachers for the promotion of social ethics.