The given bar chart illustrates the wide discrepancies between adults who had completed high school education, broken down into 2 age groups, in six nations in 2010.
Overall, people aged 25-34 in most countries received more high school education than their counterpart, most notably in South Korea, Brazil, and China.
Regarding the countries with an insignificant gap between the two cohorts, while there was about 83% of people aged 55-64 in Germany, their corresponding group was slightly higher at 87%. A similar but less pronounced pattern was documented in the USA, where the older group accounted for nearly 90%, the highest proportion in terms of this age group, compared to the younger one at 86%.
Turning to nations with a remarkable difference between these ages, the most substantial patterns were observed in Russia and South Korea, with the older cohort of the former being 70% and that of the latter roughly 42%. Their younger counterparts, however, constituted nearly 90% for Russia and roughly 99% for South Korea. Another striking difference was recorded in Brazil, with about 22% for the older group versus 52% for the younger one. People in China completing high school education trailed behind the others in both cohorts, with the 55-64 years-old being 10%, a half of that of their younger counterpart at exactly 20%.