The Community College Effect Revisited: The Importance of Attending to Heterogeneity and Complex Counterfactuals (2012)

Community colleges are controversial educational institutions, often said to simultaneously expand college opportunities and diminish baccalaureate attainment. We assess the seemingly contradictory functions of community colleges by attending to effect heterogeneity and alternative counterfactual conditions. Using data on postsecondary outcomes of high school graduates of Chicago Public Schools, we find that enrolling at a community college penalizes more advantaged students who otherwise would have attended four-year colleges, particularly highly selective schools; however, these students represent a relatively small portion of the community college population, and these estimates are almost certainly biased. On the other hand, enrolling at a community college has a modest positive effect on bachelor’s degree completion for disadvantaged students who otherwise would not have attended college; these students represent the majority of community college-goers. We conclude that discussions among scholars, policymakers, and practitioners should move beyond considering the pros and cons of community college attendance for students in general to attending to the implications of community college attendance for targeted groups of students.

Reducing Income Inequality in Educational Attainment: Experimental Evidence on the Impact of Financial Aid on College Completion (2016)

Income inequality in educational attainment is a long-standing concern,
and disparities in college completion have grown over time.
Need-based financial aid is commonly used to promote equality in
college outcomes, but its effectiveness has not been established, and
some are calling it into question. A randomized experiment is used to
estimate the impact of a private need-based grant program on college
persistence and degree completion among students from low-income
families attending 13 public universities across Wisconsin. Results indicate
that offering students additional grant aid increases the odds of
bachelor’s degree attainment over four years, helping to diminish income
inequality in higher education.