The phrase "average education attainment" is correct and usable in written English.
It can be used when discussing the typical level of education achieved by a specific population or demographic group.
Example: "The average education attainment in the region has increased over the past decade, reflecting improvements in access to educational resources."
Alternatives: "mean educational level" or "typical educational achievement".
Several studies have estimated the effect of adding one year of compulsory education on average educational attainment for European countries.
It is positively correlated with age within a given cohort of parents, but within a cross section of parents at many ages, older parents are likely to have lower education because average educational attainment has been increasing over time.
Researchers found that in almost all of the worst-affected areas, youth unemployment and child poverty were significantly higher than the national average while education attainment was significantly lower.
Because the average educational attainment was low in the population (50% did not have formal education), verbal consent was obtained from each eligible respondent who agreed to participate in the study.
In fact, an analysis of education levels of immigrants by their source countries, using the data for 1984 in the GSOEP, shows very similar average educational attainment by country of origin, despite the much lower average educational attainment in Turkey compared to that in the three EU countries.
Instead they turn to demography:[T]he average educational attainments will increase.
A study by the National Bureau of Economic Research showed that, controlling for parents' income, education, and social status, children who experience poor health on average have significantly lower education attainment, significantly poorer health, lower earnings, and a lower likelihood of working as adults.
A single measure of income is less likely than a single measure of education attainment to capture lifetime average financial resources (Heck and Pamuk 1997).
