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The authors use nationally representative survey data and a research design that relies on contemporaneous within-student and within-teacher comparisons across two academic subjects to estimate how class size affects certain non-cognitive skills in middle school. Their results indicate that smaller eighth-grade classes are associated with improvements in several measures of school engagement, with effect sizes ranging from .05 to .09 and smaller effects persisting 2 years later. Patterns of selection on observed traits and falsification exercises suggest that these results accurately identify (or possibly understate) the causal effects of smaller classes. Given the estimated earnings impact of these non-cognitive skills, the implied internal rate of return from an eighthgrade class-size reduction is 4.6% overall, but 7.9% in urban schools.

Teachers in the United States are compensated largely on the basis of fixed schedules that reward experience and credentials. However, there is a growing interest in whether performance-based incentives based on rigorous teacher evaluations can improve teacher retention and performance. The evidence available to date has been mixed at best. This study presents novel evidence on this topic based on IMPACT, the controversial teacher-evaluation system introduced in the District of Columbia Public Schools by then-Chancellor Michelle Rhee. IMPACT implemented uniquely highpowered incentives linked to multiple measures of teacher performance (i.e., several structured observational measures as well as test performance). We present regressiondiscontinuity (RD) estimates that compare the retention and performance outcomes among low-performing teachers whose ratings placed them near the threshold that implied a strong dismissal threat. We also compare outcomes among high-performing teachers whose rating placed them near a threshold that implied an unusually large financial incentive. Our RD results indicate that dismissal threats increased the voluntary attrition of low-performing teachers by 11 percentage points (i.e., more than 50 percent) and improved the performance of teachers who remained by 0.27 of a teacher-level standard deviation. We also find evidence that financial incentives further improved the performance of high-performing teachers (effect size = 0.24). © 2015 by the Association for Public Policy Analysis and Management.

An extensive theoretical and qualitative literature stresses the promise of instructional practices and content aligned with minority students' experiences. Ethnic studies courses provide an example of such \"culturally relevant pedagogy\" (CRP). Despite theoretical support, quantitative evidence on the effectiveness of these courses is limited. We estimate the causal effects of an ethnic studies curriculum, using a \"fuzzy\" regression discontinuity design based on the fact that several schools assigned students with eighth-grade GPAs below a threshold to take the course. Assignment to this course increased ninth-grade attendance by 21 percentage points, GPA by 1.4 grade points, and credits earned by 23. These surprisingly large effects suggest that CRP, when implemented in a high-fidelity context, can provide effective support to at-risk students.

Increased interest in anti-racist education has motivated the rapidly growing but politically contentious adoption of ethnic studies (ES) courses in US public schools. A long-standing rationale for ES courses is that their emphasis on culturally relevant and critically engaged content (e.g., social justice, anti-racism, stereotypes, contemporary social movements) has potent effects on student engagement and outcomes. However, the quantitative evidence supporting this claim is limited. In this preregistered regression-discontinuity study, we examine the longer-run impact of a grade 9 ES course offered in the San Francisco Unified School District. Our key confirmatory finding is that assignment to this course significantly increased the probability of high school graduation among students near the grade 8 2.0 grade point average (GPA) threshold used for assigning students to the course. Our exploratory analyses also indicate that assignment increased measures of engagement throughout high school (e.g., attendance) as well as the probability of postsecondary matriculation.

For over a decade, Immigration and Customs Enforcement (ICE) has formed partnerships allowing local police to enforce immigration law by identifying and arresting undocumented residents. Prior studies, using survey data with self-reported immigrant and citizenship status, provide mixed evidence on their demographic impact. This study presents new evidence based on Hispanic public school enrollment. We find local ICE partnerships reduce the number of Hispanic students by 10% within 2 years. We estimate partnerships enacted before 2012 displaced more than 300,000 Hispanic students. These effects are concentrated among elementary school students. We find no corresponding effects on the enrollment of non-Hispanic students and no evidence that ICE partnerships reduced pupil-teacher ratios or the percentage of students eligible for the National School Lunch Program.

Early evidence indicates that the COVID-19 pandemic sharply reduced public school enrollment in many states. However, little is known about the underlying patterns of these declines. Using new district-level data from Massachusetts, we find that these declines were concentrated in traditional districts while charter, virtual, and vocational districts increased their enrollment. Though the enrollment declines in traditional districts were widespread, we also find that the percent declines were significantly larger in smaller districts and those serving higher concentrations of White and economically disadvantaged students. The implications for understanding the pandemic's effects on learning opportunities and the anticipated fiscal stress on public schools are discussed.

A prominent class of explanations for the gender gaps in student outcomes focuses on the interactions between students and teachers. In this study, I examine whether assignment to a same-gender teacher influences student achievement, teacher perceptions of student performance, and student engagement. This study’s identification strategy exploits a unique matchedpairs feature of a major longitudinal study, which provides contemporaneous data on student outcomes in two different subjects. Within-student comparisons indicate that assignment to a same-gender teacher significantly improves the achievement of both girls and boys as well as teacher perceptions of student performance and student engagement with the teacher’s subject.

The No Child Left Behind (NCLB) Act compelled states to design school accountability systems based on annual student assessments. The effect of this federal legislation on the distribution of student achievement is a highly controversial but centrally important question. This study presents evidence on whether NCLB has influenced student achievement based on an analysis of state-level panel data on student test scores from the National Assessment of Educational Progress (NAEP). The impact of NCLB is identified using a comparative interrupted time series analysis that relies on comparisons of the test-score changes across states that already had school accountability policies in place prior to NCLB and those that did not. Our results indicate that NCLB generated statistically significant increases in the average math performance of fourth graders (effect size = 0.23 by 2007) as well as improvements at the lower and top percentiles. There is also evidence of improvements in eighth-grade math achievement, particularly among traditionally low-achieving groups and at the lower percentiles. However, we find no evidence that NCLB increased fourth-grade reading achievement.

We show that the design and decentralized scoring of New York’s high school exit exams—the Regents Examinations—led to systematic manipulation of test scores just below important proficiency cutoffs. Exploiting a series of reforms that eliminated score manipulation, we find heterogeneous effects of test score manipulation on academic outcomes. While inflating a score increases the probability of a student graduating from high school by about 17 percentage points, the probability of taking advanced coursework declines by roughly 10 percentage points. We argue that these results are consistent with test score manipulation helping less advanced students on the margin of dropping out but hurting more advanced students that are not pushed to gain a solid foundation in the introductory material.

In an effort to enhance the quality of early childhood education (ECE) at scale, nearly all U.S. states have recently adopted Quality Rating and Improvement Systems (QRIS). These accountability systems give providers and parents information about program quality and create both reputational and financial incentives for program improvement. However, we know little about whether these accountability reforms operate as theorized. This study provides the first empirical evidence on this question using data from North Carolina, a state with a mature QRIS. Using a regression discontinuity design, we examine how assignment to a lower quality rating influenced subsequent outcomes of ECE programs. We find that programs responded to a lower quality rating with comparative performance gains, including improvement on a multi-faceted measure of classroom quality. Programs assigned to a lower star rating also experienced enrollment declines, which is consistent with the hypothesis that parents responded to information about program quality by selectively enrolling away from programs with lower ratings. These effects were concentrated among programs that faced higher levels of competition from nearby providers.