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Greg J. Duncan
Are Preschool Programs Becoming Less Effective?
Anamarie A. Whitaker, Margaret Burchinal, Jade M. Jenkins, Drew H. Bailey, Tyler W. Watts, Greg J. Duncan, Emma R. Hart, Ellen S. Peisner-Feinberg.Topics: Student LearningHigh-quality preschool programs are heralded as an effective policy tool to promote the development and life-long wellbeing of children from low-income families. Yet evaluations of recent preschool programs produce puzzling findings, including negative impacts, and divergent, weaker results than… more →
Achievement Gaps in the Wake of COVID-19
Topics: Student LearningA survey targeting education researchers conducted in November, 2020 provides both short- and longer-term predictions of how much achievement gaps between low- and high-income students in U.S elementary schools will change as a result of COVID-related disruptions to schooling and family life.… more →
Timing in Early Childhood Education: How Cognitive and Achievement Program Impacts Vary by Starting Age, Program Duration, and Time Since the End of the Program
Topics: Student LearningThis paper uses meta-analytic techniques to estimate the separate effects of the starting age, program duration, and persistence of impacts of early childhood education programs on children’s cognitive and achievement outcomes. It concentrates on studies published before the wide scale… more →
Elusive Longer-Run Impacts of Head Start: Replications Within and Across Cohorts
Topics: Student LearningUsing an additional decade of CNLSY data, this study replicated and extended Deming’s (2009) evaluation of Head Start’s life-cycle skill formation impacts in three ways. Extending the measurement interval for Deming’s adulthood outcomes, we found no statistically significant… more →
A Reanalysis of Impacts of the Tennessee Voluntary Prekindergarten Program
Topics: Student LearningWe present a reanalysis of the Tennessee Voluntary Prekindergarten Program (TNVPK), a state-funded program designed to promote the school readiness of 4-year-olds from low-income families. Oversubscribed programs used a lottery to randomly assign prospective enrollees a chance to… more →