Enrollment in degree-granting institutions of higher education in Arizona as a percentage of the state’s population was about equal to the national average in 2003. The Arizona figure was higher than the national average at private for-profit institutions, slightly greater than the national average at public institutions, but considerably below average at private not-for-profit institutions. Total revenues and expenditures per student at Arizona institutions of higher education were far below the national averages in 2003, among the least in the nation. Among public institutions, Arizona’s higher education revenues and expenditures were not as far below average, but still ranked among the bottom 10 states in the nation.

Per capita earnings in Arizona has been lower than the national average for decades. The 2011 differential of 19 percent is the largest on record; the typical differential has been between 10 and 15 percent. Thus, for residents who have spent some or all of their working life in the state, the state’s historically low per capita earnings help to explain the state’s below-average per capita property income.