The educational attainment of the U.S. population is similar to that of many other industrialized countries with the vast majority of the population having completed secondary education and a rising number of college graduates that outnumber high school dropouts. As a whole, the population of the United States is spending more years in formal educational programs. As with income, levels differ by race, age, household configuration and geography. Overall the households and demographics featuring the highest educational attainment in the United States are also among those with the highest household income and wealth. Thus, while the population as a whole is proceeding further in formal educational programs, income and educational attainment remain highly correlated.