My main research interests include social stratification and mobility, specifically the sociology of education. I study the US and Israeli postsecondary education systems in order to comprehend the mechanisms underlying race/ethnic, class and gender disparities in student access to, and performance at, selective and non-selective institutions. I am also interested in examining whether and how public policies can narrow inequality in educational systems. This motivation led to several studies dealing with admission, affirmative action and financial aid policies in postsecondary education. My research was supported by grants from the Spencer Foundation, the American Educational Research Association, and the Texas Higher Educational Opportunity Project, and I have publications in several leading journals, including the American Sociological Review, Social Forces, Work and Occupations, Sociology of Education, Economics of Education Review, and Social Science Research.