In many countries, high-stakes tests play an important role in allocating students to prestigious tracks and schools in secondary education or to prestigious programs and colleges in tertiary education. It is not clear what happens if the cutoff points in these tests are systematically lowered. Will this affect subsequent educational careers? This…

To estimate the long-term effects of the Reading Recovery® intervention, a regression discontinuity design (RD) was implemented in a randomly selected sample of Reading Recovery schools during each year of the federally-funded i3 Scale-Up external evaluation (2011-2015) and also in one additional cohort during the 2016-2017 school year. Long-term…

A two-cutoff regression discontinuity design (RDD) was used to assign 321 students in grades 1 through 6 at a Title I elementary school to two types of Tier 2 reading interventions administered by paraeducators: (a) direct instruction (DI) and (b) computer-assisted instruction (CAI). Students scoring at or below a lower cutoff pretest score were…

This study examines the impact of grade retention on behavioral outcomes under a comprehensive assessment-based student promotion policy in New York City. To isolate the causal effect of grade retention, we implement a fuzzy regression discontinuity (RD) design that exploits the fact that grade retention is largely determined by whether a student…

This study uses a regression discontinuity design to evaluate the impact of seventh-grade interventions delivered by 25 schools on the reading and school engagement outcomes of struggling readers. Students in participating schools were assigned to intervention (n = 1,495) or comparison (n = 4,397) conditions, based on their state reading…

In the absence of a randomized control trial, regression discontinuity (RD) designs can produce plausible estimates of the treatment effect on an outcome for individuals near a cutoff score. In the standard RD design, individuals with rating scores higher than some exogenously determined cutoff score are assigned to one treatment condition; those…

This article provides a detailed discussion of the theory and practice of modern regression discontinuity (RD) analysis for estimating the effects of interventions or treatments. Part 1 briefly chronicles the history of RD analysis and summarizes its past applications. Part 2 explains how in theory an RD analysis can identify an average effect of…

The No Child Left Behind Act (NCLB) holds public schools accountable for the academic achievement of student subgroups that are larger than the state minimum-subgroup-size threshold. In 2004, California added students with disabilities to the NCLB subgroup categories. Using a regression discontinuity design, this study compared the academic…