This dissertation comprises three essays that empirically examine the educational outcomes of for-profit college students, military enlistees and immigrant youth. All of these are groups of "non-average" students that, in different contexts, pose challenges to the traditional provision of education. Therefore, their outcomes need to be…

It has long been thought that the United States education system is the great equalizer, lifting less advantaged children out of poverty and improving their chances for success in adulthood. The opportunity for economic and social mobility depends heavily, however, on access to high quality education. Recent research has raised concerns about…