The purpose of this study is to evaluate the state and problems on sex education of junior & senior high schools in Taegu city & Kyungbuk province and then to try to find the solutions. This article is consisted of four parts : the present state of sex education, how to improve sex education, the problems of teacher training and the actual condition of educational materials for that. The item of questionnaires was analyzed by SAS-PC program. The results are marked with frequency, percentage, mean and x?(chi-square). For effective and better sex education in high schools, development & distribution of various audio-visual teaching material, and systematic & correlative arrangement of educational contents are to be first requisite. Concerning about the teacher training it is needed that to establish the standard of general management and equipment of instruction system.