The negative consequences of teenage sexual behaviour are issues of concern in Britain and many other western countries. Over one-quarter of British young people are reported to become sexually active prior to the age of 16 and the rate of teenage pregnancy remains one of the highest in Western Europe. Current UK Government policy on sex education highlights the provision of skills for "safe sex" at school to reduce teenage pregnancy rates. This paper argues that school cannot alone provide sufficient guidance to change teenage sexual behaviour, as school, family, religion, peers and media all have their part to play. Cooperation between schools, young people, their families and communities is crucial to enhance the effectiveness of sex education and to promote positive sexual health.