The purpose of this study was to clarify the level of knowledge and the attitude about AIDS. according to high school students demographics. and the AIDS education effects in a week or 6 months. The data were surveyed from 74 bounding for university high school students and 98 vocational high school students from two counties in Chonnam. The data were collected from November 5. 1999 to May 24. 2000. using a 50-item Questionnaire. and analyzed by SPSS PC+ program for t-test. ANOVA, Repeated measure ANOVA, Duncan test. $x^2-test$ and pearson correlation coefficients. The result of study summarized as follows : 1. The knowledge score for AIDS was significantly higher in the group bounding for university. in the second grade group and the group who have drunken experience. The positive attitude score for AIDS was significantly higher in the group who have smoked experience. 2. After 1 week of AIDS education. the knowledge score for AIDS(15.02 points) was significantly higher than the one before the education(10.85 points) but after 6 months of AIDS education. the knowledge score for AIDS(12.30 points) was significantly lower than in a week(F=55.49. p=.000). 3. After 1 week of AIDS education. the positive attitude score for AIDS(3.54 points) was significantly higher than the one before the education(3.35 points) and after 6 months of AIDS education. the positive attitude score for AIDS was same the one in a week(F=7.85. p=.000). 4. We could find the significant correlation between the knowledge and the attitude for AIDS just only in a week(r=.249. p=.001). In conclusion. the knowledge score for AIDS had increased in a week of education on AIDS but it had decreased as time goes by since education. The increased positive attitude for AIDS in a week has maintained the same as time goes by since education. Therefore. It should be needed re-education on AIDS to students at proper time in order to get the aim of AIDS education. We have to develop variety education methods for educational effects. It should be included comprehensive social aspect such as a question of personal rights to increase the positive attitude for AIDS.