Based upon extensive ethnographic research with young people and teachers, offers a telling and insightful account of how young people acquire sexual knowledge and how they enact their understanding of their own gender. It highlights the ways in which young people's constructions of gender and sexuality are formed outside the school curriculum, through engagements with various forms of popular culture - such as teen magazines and television programmes - and through same-sex friendship groups. Offering a fresh perspective on a subject of perennial interest and concern, provides accounts from the inside - some of which may challenge and eclipse current approaches to sexuality education. It has significant implications for policy and practice in Personal, Social and Health Education and is also an excellent introduction to key debates and issues in the study of gender and sexuality.