Mixed results from evaluations of school reform suggest a need for evidence to explain why some models succeed while others fail. Addressing that need, this study uses structural equation modeling to estimate difference-in-differences models that examine mediating mechanisms for positive effects produced by Innovation Zone (iZone) reforms in…

One challenge in understanding "what works" in education is that effect sizes may not be comparable across studies, raising questions for practitioners and policymakers using research to select interventions. One factor that consistently relates to the magnitude of effect sizes is the type of outcome measure. This article uses study data…

This meta-analysis synthesized the findings of experimental and quasi-experimental studies to determine the efficacy of math interventions for enhancing the word problem-solving accuracy of students with mathematics difficulties in Grades 4 to 12. Further, we identified intervention and design characteristics that moderate the effectiveness of…

Many educational interventions seek to change teachers' instructional practice. Standards-based observation systems are a common and useful tool to understand these interventions' impact, but the process of measuring instructional change with observation systems is highly complex. This paper introduces a framework for examining and understanding…

This article looks at whether the Great Recession led to changes in two-year and four-year college enrollment patterns for students aged 18-24. In particular, I examine how the probability of enrollment changed for Black and Latinx students. It is not initially clear whether the Great Recession would increase or decrease college enrollment for…

While the family is a critical determinant of educational achievement, methodological difficulties and the availability of data limit estimation of the family contribution in school effectiveness models. This study uses multilevel modeling to estimate the proportion of variation in student educational achievement between families, family-level…

This paper presents findings from a randomized controlled trial studying a comprehensive program designed to support students in achieving their goals. One Million Degrees (OMD) is a nonprofit organization serving community college students in the Chicago metro area that supports students financially, academically, personally, and professionally.…

Despite policy relevance, longer-term evaluations of educational interventions are relatively rare. A common approach to this problem has been to rely on longitudinal research to determine targets for intervention by looking at the correlation between children's early skills (e.g., preschool numeracy) and medium-term outcomes (e.g., first-grade…

This study utilized a partially nested randomized control design to investigate the impact of Fusion, a first-grade math intervention. Blocking on classrooms, students were randomly assigned to one of the three conditions: a Fusion two-student group, a Fusion five student group, or a no-treatment control group. Two primary research questions were…

Binary outcomes are often analyzed in cluster randomized trials (CRTs) using logistic regression and cluster robust standard errors (CRSEs) are routinely used to account for the dependent nature of nested data in such models. However, CRSEs can be problematic when the number of clusters is low (e.g., < 50) and, with CRTs, a low number of…

Online courses have become an increasingly attractive format for delivering teacher training. However, the low retention rates are a critical and still unsolved issue. This paper presents the results of a randomized controlled trial aimed at testing the impact of a personalized support model on teachers' retention in online training courses. The…

Propensity score matching and weighting methods are often used in observational effectiveness studies to reduce imbalance between treated and untreated groups on a set of potential confounders. However, much of the prior methodological literature on matching and weighting has yet to examine performance for scenarios with a majority of treated…

Latent transition analysis is an informative statistical tool for depicting heterogeneity in learning as latent profiles. We present a Monte Carlo simulation study to guide researchers in selecting fit indices for identifying the correct number of profiles. We simulated data representing profiles of learners within a typical pre- post- follow…

This article estimates earnings impacts for those who completed long-term college credentials (degrees or college certificates requiring a year or more of study) and those who did not in an experimental evaluation of a federally-funded sectoral job training program. The experimental evaluation found no overall impact of the program on earnings,…

This is the first study to provide experimental evidence of the impact of corequisite remediation for students underprepared in reading and writing. We examine the short-term impacts of three different approaches to corequisite remediation that were implemented at five large urban community colleges in Texas, and we explore whether corequisites…