As usual on Fridays, from Raj Nallari and Breda Griffith's lecture notes.
Summary Measures of Gender Inequalities
Measures of inequality in key economic, social and political indicators suggest that gender inequality continues, although inequality in education is narrowing (Stotsky, 2006). The table below examines average values of education and health indicators for three country groupings classified by high, medium or low levels of human development based on per capita income.
Gender Inequalities in Education and Health Status, 2001/02

Source: Stotsky (2006)
Expressing gender inequality as a ratio of females to males for the relevant variables, we note that educational inequalities exist, in particular for low human development countries in primary enrollment (0.86) and especially in secondary enrollment (0.73). Gender parity in education exists for the high and medium human development countries in both primary and secondary. Indeed in the latter, girls outnumber boys at least for the year in question.