The article mentions the ethics situation of students in some secondary schools in Ho Chi Minh City. The survey results show that there are many students who have some ethics violation behaviours such as: swearing, quarreling, bullying, playing truancy, smoking and being disrespectful of their teachers on a sometime basis. Exceptionally, some students have such bad behaviours on a regular basis. From this situation, the authors tried to figure out the causes so as to propose some solutions to improve the quality of ethics education for students.