Gender Parity Index for Gross Enrolment Rate in Primary Schools (Female over Male) (Ratio)
Definition :

Ratio of Gross Enrollment Rate in Primary Schools, Female and Gross Enrollment Rate in Primary Schools, 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.