Matthew Kraft
EdWorkingPapers
Is Teacher Effectiveness Fully Portable? Evidence from the Random Assignment of Transfer Incentives
We examine how performance changes when teachers transfer across very different school contexts. The Talent Transfer Initiative program created a rare natural experiment to study such transfers by randomly assigning low-achieving schools the ability to offer high-performing teachers at higher-… more →
U.S. Schools’ Proximity to Environmental Hazard Sites: A National Analysis
We conduct a nationwide assessment of U.S. PreK-12 public and private schools’ proximity to known environmental hazard sites tracked by the U.S. Environmental Protection Agency: Superfund sites, Brownfields, and Toxics Release Inventory facilities. Prior research documents a range of negative… more →
Education and Climate Change: Synthesizing the Evidence to Guide Future Research
The effects of climate change are becoming increasingly visible across all aspects of the U.S. PreK-12 education system. Schools are both vulnerable to climate change and uniquely positioned to be part of the solution. We synthesize interdisciplinary research and data to illustrate the bi-… more →
What Impacts Should We Expect from Tutoring at Scale? Exploring Meta-Analytic Generalizability
U.S. public schools are engaged in an unprecedented effort to expand tutoring in the wake of the pandemic. Broad-based support for scaling tutoring emerged, in part, because of the large effects on student achievement found in prior meta-analyses. We conduct an expanded meta-analysis of 282… more →
The Scaling Dynamics and Causal Effects of a District-Operated Tutoring Program
Public school systems across the U.S. have made major investments in tutoring to support students’ academic recovery in the wake of the COVID-19 pandemic. We evaluate a large urban district’s efforts to design, implement, and scale a district-operated, standards-based tutoring program across… more →
The Effect of Student-Tutor Ratios: Experimental Evidence from a Pilot Online Math Tutoring Program
Budget constraints and limited supplies of local tutors have caused many K-12 school districts to pivot from individual tutoring in-person toward small-group tutoring online to expand access to personalized instruction. We conduct a field experiment to explore the effect of increasing student-… more →
The Rise and Fall of the Teaching Profession: Prestige, Interest, Preparation, and Satisfaction over the Last Half Century
We examine the state of the U.S. K-12 teaching profession over the last half century by compiling nationally representative time-series data on four interrelated constructs: occupational prestige, interest among students, the number of individuals preparing for entry, and on-the-job satisfaction… more →
Taking Teacher Evaluation to Scale: The Effect of State Reforms on Achievement and Attainment
Federal incentives and requirements under the Obama administration spurred states to adopt major reforms to their teacher evaluation systems. We examine the effects of these reforms on student achievement and attainment at a national scale by exploiting their staggered implementation across… more →
Time in School: A Conceptual Framework, Synthesis of the Causal Research, and Empirical Exploration
We examine the fundamental and complex role that time plays in the learning process. We begin by developing a conceptual framework to elucidate the multiple obstacles schools face in converting total time in school into active learning time. We then synthesize the causal research and document a… more →
Grow Your Own: An Umbrella Term for Very Different Localized Teacher Pipeline Programs
“Grow Your Own” (GYO) programs have recently emerged as a promising approach to expand teacher supply, address localized teacher shortages, and diversify the profession. However, little is known about the scale and design of GYO programs, which recruit and support individuals from the local… more →
Preferences, Inequities, and Incentives in the Substitute Teacher Labor Market
We examine the labor supply decisions of substitute teachers – a large, on-demand market with broad shortages and inequitable supply. In 2018, Chicago Public Schools implemented a targeted bonus program designed to reduce unfilled teacher absences in largely segregated Black… more →
Second Time's the Charm? How Sustained Relationships from Repeat Student-Teacher Matches Build Academic and Behavioral Skills
We examine the dynamic nature of student-teacher match quality by studying the effect of having a teacher for more than one year. Using data from Tennessee and panel methods, we find that having a repeat teacher improves achievement and decreases absences, truancy, and suspensions. These results… more →
Online Tutoring by College Volunteers: Experimental Evidence from a Pilot Program
A substantial body of experimental evidence demonstrates that in-person tutoring programs can have large impacts on K-12 student achievement. However, such programs typically are costly and constrained by a limited local supply of tutors. In partnership with CovEducation (CovEd), we conduct a… more →
The Inequitable Effects of Teacher Layoffs: What We Know and Can Do
Economic downturns can cause major funding shortfalls for U.S. public schools, often forcing districts to make difficult budget cuts including teacher layoffs. In this brief, we synthesize the empirical literature on the widespread teacher layoffs caused by the Great Recession. Studies find that… more →
Local Supply, Temporal Dynamics, and Unrealized Potential in Teacher Hiring
We explore the dynamics of competitive search in the K-12 public education sector. Using data from Boston Public Schools, we document how teacher labor supply varies substantially by position types, schools, and the timing of job postings. We find that early-posted positions are more likely to… more →
The Big Problem with Little Interruptions to Classroom Learning
Narrative accounts of classroom instruction suggest that external interruptions, such as intercom announcements and visits from staff, are a regular occurrence in U.S. public schools. We study the frequency, nature, and duration of external interruptions in the Providence Public School District… more →
School-based Mentoring Relationships and Human Capital Formation
We document a largely unrecognized pathway through which schools promote human capital development – by fostering informal mentoring relationships between students and school personnel. Using longitudinal data from a large, nationally representative sample of adolescents, we explore the… more →
Can Teacher Evaluation Systems Produce High-Quality Feedback? An Administrator Training Field Experiment
A core motivation for the widespread teacher evaluation reforms of the last decade was the belief that these new systems would promote teacher development through high-quality feedback. We examine this theory by studying teachers’ perceptions of evaluation feedback in Boston Public Schools and… more →
Operator versus Partner: A Case Study of Blueprint School Network’s Model for School Turnaround
Numerous high-profile efforts have sought to “turn around” low-performing schools. Evidence on the effectiveness of school turnarounds, however, is mixed, and research offers little guidance on which models are more likely to succeed. We present a mixed-methods case study of turnaround efforts… more →
Sustaining a Sense of Success: The Protective Role of Teacher Working Conditions During the COVID-19 Pandemic
COVID-19 shuttered schools across the United States, upending traditional approaches to education. We examine teachers’ experiences during emergency remote teaching in the spring of 2020 using responses to a working conditions survey from a sample of 7,841 teachers across 206 schools and 9… more →
A Blueprint for Scaling Tutoring Across Public Schools
In this thought experiment, we explore how tutoring could be scaled nationally to address COVID-19 learning loss and become a permanent feature of the U.S. public education system. We outline a blueprint centered on ten core principles and a federal architecture to support adoption, while… more →
Can Technology Transform Communication between Schools, Teachers, and Parents? Evidence from a Randomized Field Trial
We study the adoption and implementation of a new mobile communication app among a sample of 132 New York City public schools. The app provides a platform for sharing general announcements and news as well as engaging in personalized two-way communication with individual parents. We provide… more →
Interpreting Effect Sizes of Education Interventions
Researchers commonly interpret effect sizes by applying benchmarks proposed by Cohen over a half century ago. However, effects that are small by Cohen’s standards are large relative to the impacts of most field-based interventions. These benchmarks also fail to consider important differences in… more →
Teacher Accountability Reforms and the Supply and Quality of New Teachers
In recent years, states have sought to increase accountability for public school teachers by implementing a package of reforms centered on high-stakes evaluation systems. We examine the effect of these reforms on the supply and quality of new teachers. Leveraging variation across states and time… more →
Developing Ambitious Mathematics Instruction Through Web-Based Coaching: A Randomized Field Trial
This paper describes and evaluates a web-based coaching program designed to support teachers in implementing Common Core-aligned math instruction. Web-based coaching programs can be operated at relatively lower costs, are scalable, and make it more feasible to pair teachers with coaches who have… more →
Teacher Skill Development: Evidence from Performance Ratings by Principals
We examine the dynamic nature of teacher skill development using panel data on principals’ subjective performance ratings of teachers. Past research on teacher productivity improvement has focused primarily on one important but narrow measure of performance: teachers’ value-added to student… more →