It is sad that it takes so many generations.
My parents went to museums with us. We went to summer camps that provided educational activities (fun physics experiments and the like). We got home schooling for learning instruments and our parents were able to help with homework and satisfy our scientific curiosity. And of course we learned the soft skills of how to move in the upper middle class environments, how to approach job interviews and so on.
These aspects help tremendously in striving for a higher education and well paying job. It is also quite interesting to see in my families history, where my parents were the first to get an academic degree, but the grandparents of my parents were already skilled craftsmen, one with 4 master titles in different metal working crafts.
There is only so much the government can do and i’d say that two to three generations are probably the bottom line for how fast it can go on a societal level. In the other countries like Germany there is systemic class discrimination to keep the lower classes low.
I find this data very suspect. Greece is one of the poorer countries in the EU and somehow it takes fewer generations than far more rich countries like France and Germany? The only thing that makes sense is that they mention the mean salary, so Greek wages are so low that you don’t need much to get up into the mean salary range, I guess.
It doesnt matter as much how high your wage is relative to other countries, when i suffices to afford a middle class life in your country.
Germany is particularly bad, because we have a class segregated high school system and the assistance systems to help low income households to get their kids to study at an university are reaching less people and are also insufficient because the rates were not adjusted to inflation. Oh and also thanks to many loopholes in the inheritance tax rich people can inherit without taxation whereas middle class people have to pay taxes. Finally eastern Germany was colonized and sold pennys on the hundred dollar bills to the western German Elites, creating a huge wealth disparity where most people are simply prized out of investing into anything lasting.