The class of engineering ethics carried out in the department of mechanical system engineering of Hiroshima University is introduced, and the effects of teaching engineering ethics are analyzed using the responses of students against questions by the instructor, their reports and the results of an examination. The analysis indicates the importance of case studies and good advice by an instructor to improve the skill of students to analyze and deal with problems concerned with engineering ethics. However, it is quite difficult to change ethical awareness of students to think of ethical problems of engineering at all times. The importance of teaching a fundamental knowledge of engineering ethics and the difficulty in evaluating an academic record of the class are also discussed.
