Institution
University of Missouri
Title
Professor of Economics and Public Policy
Email
koedelc@missouri.edu
Cory Koedel
EdWorkingPapers
Principal Effects on Teacher Working Conditions
Research on school principals highlights their role in shaping teachers’ work environments, but most evidence is qualitative or correlational. We provide plausibly causal estimates of how principals affect a broad swath of teacher working conditions using data from Illinois, where the State… more →
The Peer Effects of Grade Retention
We study the peer effects of grade retention in the context of Indiana’s statewide third-grade retention policy. When a retention occurs, it changes the peer group for two cohorts: rising fourth graders who lose a peer and rising third graders who gain a peer. We identify peer effects in both… more →
The Decline in Teacher Working Conditions During and After the COVID Pandemic
We study changes to teacher working conditions from 2016-17 to 2022-23, covering school years before, during, and after the COVID pandemic. We show working conditions were improving leading into the pandemic but declined when the pandemic arrived. Perhaps more surprisingly, the peak of the… more →
Diversity Trends Among Faculty in STEM and non-STEM Fields at Selective Public Universities in the U.S. from 2016 to 2023
During the 2015-16 academic year, racial protests swept across college campuses in the U.S. These protests were followed by large university investments in initiatives to promote diversity, which combined with existing diversity dynamics, have helped to shape recent faculty diversity trends. We… more →
Institutional heterogeneity in the education and earnings returns to postsecondary technical education: Evidence from Missouri
We estimate the education and earnings returns to enrolling in technical two-year degree programs at community colleges in Missouri. A unique feature of the Missouri context is the presence of a highly regarded, nationally ranked technical college: State Technical College of Missouri (State Tech… more →
Could shifting the margin between community college and university enrollment expand and diversify university degree production in STEM fields?
We examine the potential to expand and diversify the production of university STEM degrees by shifting the margin of initial enrollment between community colleges and 4-year universities. Our analysis is based on statewide administrative microdata from the Missouri Department of Higher Education… more →
Holding Back to Move Forward: The Effects of Retention in the Third Grade on Student Outcomes
We evaluate the effects of grade retention on students’ academic, attendance, and disciplinary outcomes in Indiana. Using a regression discontinuity design, we show that third grade retention increases achievement in English Language Arts (ELA) and math immediately and substantially, and the… more →
Using Predicted Academic Performance to Identify At-Risk Students in Public Schools
Measures of student disadvantage—or risk—are critical components of equity-focused education policies. However, the risk measures used in contemporary policies have significant limitations, and despite continued advances in data infrastructure and analytic capacity, there has been little… more →
The narrowing gender wage gap among faculty at public universities in the U.S.
We study the conditional gender wage gap among faculty at public research universities in the U.S. We begin by using a cross-sectional dataset from 2016 to replicate the long-standing finding in research that conditional on rich controls, female faculty earn less than their male colleagues. Next… more →
Free and reduced-price meal eligibility does not measure student poverty: Evidence and policy significance
Free and reduced-price meal (FRM) enrollment is commonly used in education research and policy applications as an indicator of student poverty. However, using multiple data sources external to the school system, we show that FRM status is a poor proxy for poverty, with enrollment rates far… more →
The Effect of the Community Eligibility Provision on the Ability of Free and Reduced-Price Meal Data to Identify Disadvantaged Students
The Community Eligibility Provision (CEP) is a policy change to the federally-administered National School Lunch Program that allows schools serving low-income populations to classify all students as eligible for free meals, regardless of individual circumstances. This has implications for the… more →
The Formalized Processes Districts Use to Evaluate Mathematics Textbooks
Textbooks are a widely used educational intervention that can affect student achievement, and the marginal cost of choosing a more effective textbook is typically small. However, we know little about how textbooks get from the publisher to the classroom. We use a lens of institutional theory and… more →