Mathematica
Impacts of Michigan Transitional Kindergarten Through Third Grade
Transitional Kindergarten (TK) is a relatively new model of early childhood education, with little evidence on whether and how it affects children’s development. This study provides new evidence using data from Michigan, which has the nation’s second-largest TK program. Using survey data (N=171)… more →
A Meta-Analysis of the Experimental Evidence Linking Mathematics and Science Professional Development Interventions to Teacher Knowledge, Classroom Instruction, and Student Achievement
Despite evidence that teacher professional development interventions in mathematics and science can increase student achievement, our understanding of the mechanisms by which this occurs – particularly how these interventions affect teachers themselves, and the extent to which teacherlevel… more →
Improving College Readiness in Mathematics in the Context of a Comprehensive High School Reform
This mixed methods experimental study examined the impacts of the Early College High School model on students’ college readiness in mathematics measured by their success in college preparatory mathematics courses in the 9th through 11th grades, and disaggregated for academically prepared and… more →
Transitional Kindergarten: The New Kid on the Early Learning Block
In recent years, several states have expanded a new publicly funded learning option: Transitional Kindergarten (TK). TK programs bridge prekindergarten and kindergarten in their eligibility, requirements, and design. We use Michigan’s TK program as a case study on the fit of this new entrant in… more →
The Effect of Early Childhood Programs on Third-Grade Test Scores: Evidence from Transitional Kindergarten in Michigan
Transitional Kindergarten (TK) is a relatively recent entrant into the U.S. early education landscape, combining features of public pre-K and regular kindergarten. We provide the first estimates of the impact of Michigan’s TK program on 3rd grade test scores. Using an augmented regression… more →
The Ups and Downs of Classroom Quality Over the Preschool Year and Relations to Children’s School Readiness
Despite considerable evidence on the links between average classroom quality and children’s learning, the importance of variation in quality is not well understood. We examined whether three measures of variation in observed classroom quality over the school year – overall variation in quality,… more →
The Effect of Universal Free School Meals on Child BMI
We estimate the effect of universal free school meal access through the Community Eligibility Program (CEP) on child BMI. Through the CEP, schools with high percentages of students qualified for free or reduced-priced meals can offer freebreakfast and lunchto all students. With administrative… more →
Are Four-Year Public Colleges Engines for Economic Mobility? Evidence from Statewide Admissions Thresholds
Four-year public colleges may play an important role in supporting intergenerational mobility by providing an accessible path to a bachelor’s degree and increasing students' earnings. Leveraging a midsize state’s GPA- and SAT-based admissions thresholds for the four-year public sector, I use a… more →
The Other Half of the Story: Does Excluding the Early Grades from School Ratings Matter?
Because high-stakes testing for school accountability does not begin until third grade, accountability ratings for elementary schools do not directly measure students’ academic progress in grades K through 2. While it is possible that children’s test scores in grades 3 and above are highly… more →
STEM Summer Programs for Underrepresented Youth Increase STEM Degrees
The federal government and many individual organizations have invested in programs to support diversity in the STEM pipeline, including STEM summer programs for high school students, but there is little rigorous evidence of their efficacy. We fielded a randomized controlled trial to study a… more →
How Did It Get This Way? Disentangling the Sources of Teacher Quality Gaps Through Agent-Based Modeling
We use publicly available, longitudinal data from Washington state to study the extent to which three interrelated processes—teacher attrition from the state teaching workforce, teacher mobility between teaching positions, and teacher hiring for open positions—contribute to “teacher quality gaps… more →
A Meta-Analysis of the Experimental Evidence Linking STEM Classroom Interventions to Teacher Knowledge, Classroom Instruction, and Student Achievement
Despite growing evidence that classroom interventions in science, technology, engineering, and mathematics (STEM) can increase student achievement, there is little evidence regarding how these interventions affect teachers themselves and whether these changes predict student learning.
Can nudging mentors weaken student support? Experimental evidence from a virtual communication intervention
This paper presents results from a randomized trial of a nudge intervention designed to encourage and enhance virtual student support. During the 2019-20 school year, randomly selected mentors in a school-based mentoring program received monthly reminders with tips for communicating with youth… more →
The Effect of Course Shutouts on Community College Students: Evidence from Waitlist Cutoffs
One frequently cited yet understudied channel through which money matters for college students is course availability- colleges may respond to budgetary pressure by reducing course offerings. Open admissions policies, binding class size constraints, and heavy reliance on state funding may make… more →