How is the Education Index calculated?

The Education Index is calculated by taking into account three main components: mean years of schooling, expected years of schooling, and the literacy rate.

1. Mean years of schooling: This component measures the average number of years of education received by individuals aged 25 and above. It is calculated by summing up the years of schooling completed by individuals and dividing it by the total population in that age group.

2. Expected years of schooling: This component represents the number of years of education that a child of school entrance age can expect to receive in the future. It is based on the current enrollment rates at different education levels and the duration of each level.

3. Literacy rate: This component measures the percentage of people aged 15 and above who can read and write. It is determined through surveys and censuses conducted by national statistical agencies.

To calculate the Education Index, each of these three components is normalized using a maximum value and then aggregated. The maximum value for mean years of schooling and expected years of schooling is set at 15 years, while for the literacy rate, it is set at 100%. The normalized values are then averaged to obtain the final Education Index score, which ranges from 0 to 1, with 1 representing the highest level of education attainment.