In order for adolescents to learn about sex and relationships, the education must be of significance and meet their needs and interests. The study investigated adolescents' conceptions of learning and education about sex and relationships. A phenomenographic approach was used. Six focus group interviews were conducted with adolescents ages 18-19 in Sweden. The results showed that stable ground for learning implies select issues of importance, that is, values and prejudices, up-to-date knowledge, and practical skills. These issues should be dispersed throughout the school years in relation to the students' own maturity. This seemed to enable internalization of different aspects of sex and relationships. Learning about sex and relationships can create meaning for youth and generate progress by fostering autonomy and identity, correcting misconceptions, counteract prejudices, not in isolation rather in society in a defined culture.