Gender Parity Index, Gross Enrolment Ratio, Secondary (Ratio)
Definition :

Ratio of gross enrolment ratio, secondary education, female to gross enrolment ratio, secondary education, male.

Explanation :

A GPI of 1 indicates parity between the sexes; a GPI that varies between 0 and 1 typically means a disparity in favour of males; whereas a GPI greater than 1 indicates a disparity in favour of females.