The purpose of this study was to investigate the needs of sexeducation for students of senior high schools. The subjects of thisstudy were one thousand and one hundred ninety-six senior highstudents drawn from the Kaohsiung city. Data were collected from theresponses of subjects on the Questionnaire on the Needs of SexEducation. Basic statistics, t-test, ANOVA were employed to analyzethe data collected. Major findings were drawn as folowing:1. The degree of senior high students' sex education needs was higher than the median.2. The difference between male and female senior high students' sex education needs was not significant.3. The difference between public and private senior high students' sex education needs was not significant.4. The second grade senior high students' sex education needs was higher than the first grade senior high students'.5. The difference of sex education needs among students from various levels of SES was not significant.