This paper simulates a system of socioeconomic status (SES)−based affirmative action in college admissions and examines the extent to which it can produce racial diversity in selective colleges. Using simulation models, we investigate the potential relative effects of race- and/or SES-based affirmative action policies on the racial and socioeconomic distribution of students in colleges. These simulations suggest three important patterns: (a) practical SES-based affirmative action policies do not yield nearly as much racial diversity as do race-based policies; (b) there is little evidence that affirmative action policies produce systemic academic mismatch; on average, affirmative action policies do not sort minority students into colleges for which they are academically unqualified; and (c) the use of affirmative action policies by some colleges affects enrollment patterns in other colleges.
