Background: The situation of HIV / AIDS in the province of Phu Yen Dong Hoa district in general and in particular is showing signs of increased in recent years, research on HIV / AIDS on adult subjects of major research on behavior sexual behavior of drug addicts, have yet to find research materials about stigma and discrimination people with H Objective: to assess knowledge, attitudes about stigma and discrimination of students on HIV / AIDS in schools Le Trung Kien high school, in 2009 to 2010.Methods: A cross-sectional survey was conducted with a total of 559 students participated.