Early marriage can also have negative inter-generational effects as children are less likely to be educated or immunised if their mother has not received an education (World Bank, 2011). Countries with a lower incidence of early marriage are more likely to have a higher gross female secondary school enrolment rate. In South Africa, for example, 3% of women aged 15-19 are married and the country has a gross female secondary school enrolment rate of 96%. By contrast, in Chad, 49% of women aged 15-19 are married and the gross female secondary school enrolment is 15%.