First of all, this map shows the proportion of the population compared to the size of the country, which is an interesting additional information because it shows how unevenly the population is spread around the world and most importantly that the size of the population does not seem to be a factor in education inequality. Indeed, countries come in all sizes and colors. However, this also makes the map somewhat hard to read (we can hardly see Russia, Norway, Finland or Sweden; we cannot identify certain countries). Moreover, there is a difference between a 0.75 ratio and a completely equal one, which should have been emphasised. In Switzerland the number of schooling years is almost equal while in Pakistan there is a 2-year difference, but both countries are yellow.
What we can see is that countries in Latin America, Africa or South-Eastern Asia unexpectedly have a good score (for example, Lybia, the Philippines or Brazil). This helps to rid ourselves of some stereotypes concerning gender equality around the world.
However, we must keep in mind that the ratio is not always representative of the overall state of gender equality and simply the access to education within each country, as an average of 6 years of education for both genders and an average of 15 years of education for both genders gives the same ratio, and as the education gender gap is not the only factor in gender equality. Still, it gives us an overall idea of what life an average girl in Africa, in the Middle East or in West Asia will lead: will she have a say in her future?