Gender-based discrimination in education is both a cause and a consequence of deep-rooted disparities in society. Poverty, geographical isolation, ethnic background, disability, traditional attitudes about their status and role all undermine the ability of women and girls to exercise their rights. Harmful practices such as early marriage and pregnancy, gender-based violence, anddiscriminatory education laws, policies, contents and practices still prevent millions of girls form enrolling, completing and benefitting from education. Gender must therefore be integrated at all levels of education, from early childhood to higher education, in formal and non-formal settings and from planning infrastructure to training teachers.