https://nces.ed.gov/fastfacts/display.asp?id=561 , research by the National Center for Education Statistics http://nces.ed.gov/fastfacts/display.asp?id=561 college graduates http://nces.ed.gov/fastfacts/display.asp?id=561 statistics National Center for Education Statistics noted http://nces.ed.gov/fastfacts/display.asp?id=561