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K-12 Education

Emily Morton.

Four-day school weeks have proliferated across the United States in recent years, reaching over 650 public school districts in 24 states as of 2019, but little is known about their implementation and there is no consensus on their effects on students. This study uses district level panel data from Oklahoma and a difference-in-differences research design to provide estimates of the causal effect of the four-day school week on high school students’ ACT scores, attendance, and disciplinary incidents during school. Results indicate that four-day school weeks decrease per-pupil bullying incidents by approximately 39% and per-pupil fighting incidents by approximately 31%, but have no detectable effect on other incident types, ACT scores, or attendance.

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Andrew C. Johnston, Jonah Rockoff.

As unfunded pension liabilities grow, governments experiment with ways to curb costs. We examine the effect of a representative cost-cutting reform on the retention and productivity of workers. The reform reduced pension annuities and increased penalties for early retirement, projected to save 8 percent of revenues. We leverage administrative records and a discontinuity in the reform to estimate its effect on labor supply. The reform slightly increased worker retention, and we can rule out small attrition effects. The reform had no effect on worker output. The extensive and intensive margins of labor supply appear to be maintained under the reform.

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Aaron Phipps.

Using administrative data from D.C. Public Schools, I use exogenous variation in the presence and intensity of teacher monitoring to show it significantly improves student test scores and reduces suspensions. Uniquely, my setting allows me to separately identify the effect of pre-evaluation monitoring from post-evaluation feedback. Monitoring's effect is strongest among teachers with a large incentive to increase student test scores. As tests approach, unmonitored teachers sacrifice higher-level learning, classroom management, and student engagement, even though these pedagogical tasks are among the most effective. One possible explanation is teachers ``teach to the test'' as a risk mitigation strategy, even if it is less effective on average. This is supported by showing teaching to the test has a smaller effect on student test score variance than other teaching approaches. These results illustrate the importance of monitoring in contexts where teachers have the strongest incentive to deviate from pedagogically sound practices.

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Michael Gottfried, Michael Little, Arya Ansari.

The benefits of student-teacher ethnoracial matching on student outcomes—ranging from academic achievement to postsecondary attainment—are well documented. Yet, we know far less about the role of student-teacher ethnoracial matching in the earliest grades school and on less about effects on non-academic outcomes. The purpose of this study is to advance our understanding of student-teacher ethnoracial matching in early elementary school by exploring two executive function outcomes – working memory and cognitive flexibility. Drawing on data from the Early Childhood Longitudinal Study – Kindergarten Class of 2011, our findings suggest student-teacher ethnoracial matching benefits on working memory skills, though not cognitive flexibility. Observed associations for working memory are of similar size to those for academic achievement outcomes and are largest for Black and Latinx students.

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Meghan Comstock, Kenneth A. Shores, Camila Polanco, Erica Litke, Kirsten Lee Hill, Laura M. Desimone.

As states and districts expand their goals for equitable mathematics instruction to focus on cultural responsiveness and rigor, it is critical to understand how teachers integrate multiple teaching approaches. Drawing on survey data from a larger study of professional learning, we use mixture modeling to identify seven unique ways that middle school mathematics teachers integrate ambitious, traditional, and culturally responsive (CR) mathematics instruction. The resulting typology is driven almost exclusively by variation in CR teaching. About half of teachers reported rarely engaging in CR teaching. Teachers who emphasized CR teaching tended to be teachers of color and have high CR teaching self-efficacy. Findings suggest that tailoring teacher development to how teachers blend multiple approaches may best support equitable mathematics instruction.

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Sam Sims, Harry Fletcher-Wood, Alison O’Mara-Eves, Sarah Cottingham, Claire Stansfield, Josh Goodrich, Jo Van Herwegen, Jake Anders.

Multiple meta-analyses have now documented small positive effects of teacher professional development (PD) on pupil test scores. However, the field lacks any validated explanatory account of what differentiates more from less effective in-service training. As a result, researchers have little in the way of advice for those tasked with designing or commissioning better PD. We set out to remedy this by developing a new theory of effective PD based on combinations of causally active components targeted at developing teachers’ insights, goals, techniques, and practice. We test two important implications of the theory using a systematic review and meta-analysis of 104 randomized controlled trials, finding qualified support for our framework. While further research is required to test and refine the theory, we argue that it presents an important step forward in being able to offer actionable advice to those responsible for improving teacher PD.

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Robert P. Strauss.

This paper compares and contrasts two required building level school violence measures under NCLB, arrests and incidents of well-defined school misconduct acts, across 20 years of Pennsylvania’s approximately 3,000 public school buildings. Generally, both arrests for school violence and incidents of school violence are rare events. Over 20 years, the third quartile arrest rate was zero and, the third quartile incident rate was 3.3%. Relatively few, 4.1% overall, of Pennsylvania’s school buildings were persistently dangerous as defined and reported pursuant to Pennsylvania’s state plan to the US Department of Education; however, these buildings represented about 7.8% of the student population statewide. When we measure whether or not a school building is dangerous based on reported school violence incidents, that is without an arrest requirement, fully 36.9% of Pennsylvania’school buildings were dangerous, and they represented 46.7% of the students statewide. Both Philadelphia and Pittsburgh public school buildings were disproportionately unsafe and among the top 20 districts in the state which were unsafe over the 20 year study period.

Exploratory regression analysis of mean building scale scores for math and language arts explained about 58% of the variation in such learning outcome measures. As expected, household poverty, holding all else constant, has very strong, negative effects on learning outcomes. A school building composed entirely of low income students will score about 240 scale points lower, about 1.24 standard deviations lower, than a school building without any low income students. A school building at the 90th percentile in terms of student misconduct and poverty rates, would have lower student test scores by about 1 to 1.28 standard deviations. Were a school administrator to reduce student misconduct rates from the 90th percentile to the 50th percentile, our regression coefficients predict learning gains on the order of (100-43) = 2/3 of a standard deviation in mean scale scores.

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Sarah A. Cordes, Christopher Rick, Amy Ellen Schwartz.

School buses may be a critical education policy lever, breaking the link between schools and neighborhoods and facilitating access to school choice. Yet little is known about the commute for bus riders, including the average length of the bus ride or whether long commutes harm academic outcomes. We begin to fill this gap using data from New York City to explore the morning commutes of over 120,000 bus riders. We find that long bus rides are uncommon and that those with long bus rides are disproportionately Black and more likely to attend charter or district-choice schools. We find deleterious effects of long bus rides on attendance and chronic absenteeism of district-choice students.

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Paul T. von Hippel, Ana P. Cañedo.

Half of kindergarten teachers split children into higher and lower ability groups for reading or math. In national data, we predicted kindergarten ability group placement using linear and ordinal logistic regression with classroom fixed effects. In fall, test scores were the best predictors of group placement, but there was bias favoring girls, high-SES (socioeconomic status) children, and Asian Americans, who received higher placements than their scores alone would predict. Net of SES, there was no bias against placing black children in higher groups. By spring, one third of kindergartners moved groups, and high-SES children moved up more than their score gains alone would predict. Teacher-reported behaviors (e.g., attentiveness, approaches to learning) helped explain girls’ higher placements, but did little to explain the higher placements of Asian American and high-SES children.

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Yujie Sude, Patrick J. Wolf.

Private school choice policies have been enacted and expanded across the United States since the 1990s. By January 2021, 30 states plus the District of Columbia and Puerto Rico hosted 67 distinct private school choice policies. Why have some states adopted and expanded this education reform while others have demurred? Which states are more likely to adopt specific types of private school choice initiatives in the coming years? We present the results of an exploratory empirical analysis examining which state-level political, economic, and educational factors predict past policy decisions regarding the enactment and expansion of private school choice in 49 states from 2000 to 2016. The results from our most preferred statistical model further predict which states are more and less likely to take action towards such policies in subsequent years. The political factors involving Republican control of the governorship and legislature, prevalence of minority students in the K-12 population, and share of private school enrollment in the state prove to be highly predictive factors in school choice adoption. The economic factor of a comparatively low state per-capita GDP also consistently predicts school choice policy adoption in our models.

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