Community Colleges and Upward Mobility
74 Pages Posted: 17 May 2019 Last revised: 14 Aug 2021
Date Written: August 13, 2021
Two-year community colleges enroll nearly half of all first-time undergraduates in the United States, but to ambiguous effect: low persistence rates and the potential for diverting students from 4-year institutions cast ambiguity over 2-year colleges' contributions to upward mobility. This paper develops a new instrumental variables approach to identifying causal effects along multiple treatment margins, and applies it to linked education and earnings registries to disentangle the net impacts of 2-year college access into two competing causal margins: significant value-added for 2-year entrants who otherwise would not have attended college, but negative impacts on students diverted from immediate 4-year entry.
Keywords: Community colleges, 2-year colleges, upward mobility, diversion, instrumental variables, multiple treatments, returns to college
JEL Classification: I26, J24, C31, C36
Suggested Citation: Suggested Citation