Student Learning
Beyond the Classroom: Impact of a High-Dosage Tutoring Program on Student Literacy Achievement
This study examines the impact of a high-dosage tutoring program, characterized by low tutor-to-student-ratio, on the literacy achievement of students in grades two through five in a midsized suburban school district in the southeastern United States. Using a student-level randomized controlled… more →
Learning to Work Towards Goals: A Sequential Evaluation of the Effect of Goal-Setting Course on Academic and Soft Skills
This study sequentially evaluates a soft-skills course implemented in Ugandan and Kenyan primary schools that replaced academic review time with lessons on goal-setting and related skills as students prepared for high-stakes primary school-leaving exams. An exploratory evaluation in Uganda… more →
COVID-19-Induced School Closures and Disadvantaged Children’s Post-COVID Academic Growth: A Longitudinal Cohort Study
This study draws on unique, repeated-measures data on a diverse (51% female; 53% Latine, 22% Black, 11% White), low-income cohort of children (N = 680) whose academic skills were assessed before and after COVID-19-induced school closures. Longitudinal models predicted changes in children’s… more →
Cheaper (and more effective) by the dozen: Evidence from 12 randomized A/B tests optimizing tutoring for scale
Over the course of 12 rapid randomized experiments, we optimize an educational tutoring program. Tutoring is one of the most effective educational approaches yet has remained difficult to scale due to high costs. We adaptively test and improve a technology-enabled tutoring program to enhance… more →
Creating Coherence: Does Instructional Alignment Affect the Impact of Tutoring?
This study examines the impact of using instructionally aligned literacy tutoring with students in kindergarten through third grade under a Response to Intervention framework. We conducted a randomized controlled trial to evaluate the impact on literacy assessment scores for 296 students in four… more →
Beyond the One-Teacher Model: Experimental Evidence on Using Embedded Paraprofessionals as Personalized Instructors
Using embedded paraprofessionals to provide personalized instruction is a promising model for differentiating instruction within the classroom. This study examines two randomized controlled trials of paraprofessional-led tutoring in early-grade math and literacy. However, intent-to-treat (ITT)… more →
What is the impact of changing schools on the academic outcomes of elementary and middle school students?
We study how different kinds of school changes shape achievement in grades 4–8 using data from six California districts (2016–17 through 2019–20). We estimate the effects of structural (promotional), nonstructural summer, and midyear moves and find that structural and summer moves have near-zero… more →
Can Peer Group Design Improve Engagement in Online STEM Courses? The Role of Motivation to Lead
Peer interaction is important for student engagement and success in higher education and becomes even more critical in online STEM education, where limited interaction can undermine motivation and belonging—key factors for success in rigorous STEM coursework. Despite the widespread use of peer… more →
Off to a Great Start: The Potential for Tutoring Paired with the Off2Class Foundational Literacy Curriculum to Boost English Proficiency Gains for Adolescent Newcomer English Learners
Adolescent English learners with low literacy strive to learn a new language with minimal or no reading skills. Their efforts are often complicated by having special learning needs or limited experiences with formal education. Meanwhile, they need English literacy in middle and high school,… more →
Gender Gaps in the Early Grades: Questioning the Narrative that Schools are Poorly Suited to Young Boys
A growing number of scholars and educational leaders have raised concerns that the mismatch between an increasingly academic focus in the early grades and boys’ maturity at school entry is disadvantaging young boys in school. In this study, we use a unique dataset of ten million students to… more →
When interventions don’t move the needle: Insights from null results in education research
As school districts focus on improving learning, they can learn not only from when and where interventions work—but also from why they sometimes do not. Policymakers widely embraced high-impact tutoring as an evidence-supported strategy to address learning delays from the COVID-19 pandemic.… more →
Investing in Human Capital During Wartime: Experimental Evidence from Ukraine
This paper provides insights into human capital investments during wartime by presenting evidence from three experiments of an online tutoring program for Ukrainian students amid Russia’s invasion of Ukraine. Conducted between early 2023 and mid-2024, the experiments reached nearly 10,000… more →
The Power of Personalized Attention: Comparing Pedagogical Approaches in Small Group and One-on-One Early Literacy Tutoring
Tutoring has played a significant role in pandemic-related learning recovery, supporting student learning and engagement. A recent randomized controlled trial estimated that one-on-one virtual early literacy tutoring was nearly twice as effective as two-on-one tutoring for improving student… more →
Toward More Equitable Learning Environments: Insights from Digital Trace Data on Inclusive Instructional Design Features
Seminal teaching and learning theories converge on the critical role of instructional design in promoting equity and inclusivity in higher education. However, large-scale evidence remains limited as to which specific design features promote more equitable outcomes across diverse student… more →
Efficiency or Burnout? The Effects of Condensed Course Formats on Student Achievement in Community Colleges
Condensed courses—those that compress instructional content into a shorter time frame—are increasingly popular in higher education. While they offer greater flexibility, concerns remain that the accelerated pace may compromise learning. Using administrative data from a state community college… more →
Does Civic Education Impact Primary-School Students’ Civic Outcomes? Experimental Evidence from Liberia
We present experimental evidence on a civic education program in Liberia's public primary schools across 140 schools serving grades 3 and 4. The program provided new civic textbooks, teacher training, bi-weekly instruction, and regular classroom monitoring. After one school year, treatment… more →
Out-of-School Learning: Subtitling vs. Dubbing and the Acquisition of Foreign-Language Skills
The development of English-language skills, a near necessity in today’s global economy, is heavily influenced by historical national decisions about whether to subtitle or dub TV content. While prior studies of language acquisition have focused on schools, we show the overwhelming influence of… more →
The Effects of Early Childhood Science Educational Interventions on Children’s Science Achievement: A Meta-Analysis of Classroom-Based Studies
The importance of providing children with more robust opportunities to access high-quality science instruction is a widely recognized challenge. Unfortunately, science instruction is often neglected in the earliest school grades, meaning that many young children face opportunity gaps to learning… more →
The effects of third-grade retention on multilingual students: A gateway or a gatekeeper?
This paper estimates the effect of test-based grade retention on multilingual students classified as English Learners (ML-ELs). This policy could provide an opportunity for ML-ELs to develop English language proficiency and master academic content or put them at increased risk of worse academic… more →
Understanding Disruptions: Causes of and Variation in Lost Instructional Time
Virtual instruction has boomed after the COVID-19 pandemic, including the use of virtual environments within in-person schools. But, research has provided little evidence about student experiences on these virtual platforms, nor how to improve the use of these platforms. Through natural language… more →