Anecdotal evidence points to the importance of school principals, but the limited existing research has neither provided consistent results nor indicated any set of essential characteristics of effective principals. This paper exploits extensive student-level panel data across six states to investigate both variations in principal performance and…

Research shows that assuming a test scale is equal-interval can be problematic, especially when the assessment is being used to achieve a policy aim like evaluating growth over time. However, little research considers whether teacher value added is sensitive to the underlying test scale, and in particular whether treating an ordinal scale as…

Does student-teacher match quality exist? Prior work has documented large disparities in teachers' impacts across student types but has not distinguished between sorting and causal effects as the drivers of these disparities. I propose a disparate value-added model and derive a novel measure of teacher quality--revealed comparative advantage--that…

Student assessment nonparticipation (or opt out) has increased substantially in K-12 schools in states across the country. This increase in opt out has the potential to impact achievement and growth (or value-added) measures used for educator and institutional accountability. In this simulation study, we investigated the extent to which…

In this study, we compare the teacher quality distributions in charter schools and traditional public schools, and examine mechanisms that might explain cross-sector differences in teacher effectiveness as measured by teacher value-added scores using school and teacher level data from Florida. We have three main findings. First, we find that…

Evidence that teachers' short-term instructional effects persist over time and predict substantial long-run impacts on students' lives provides much of the impetus for a wide range of educational reforms focused on identifying and responding to differences in teachers' value-added to student learning. However, relatively little research has…

We use panel data in Washington State to study the extent to which teacher assignments between fourth and eighth grade explain gaps between advantaged and disadvantaged students--as defined by underrepresented minority status (URM) and eligibility for free or reduced price lunch (FRL)--in their eighth grade math test scores and high school course…

This report looks at student growth in Arkansas school districts disaggregated by district poverty and by the district's value-added performance relative to other districts. We estimated district value-added performance statistics by subject and grade level (8 and 11-12) for longitudinal student cohorts, using statistical models that adjusted for…

In our 2019 annual report, we provide insight into our sponsorship work during the year and the performance of our sponsored schools. We are also pleased to highlight the good work of our colleagues on Fordham's policy and research teams. Our schools' academic performance shows several schools doing very well on Ohio's value added (growth) measure…

The 2017-18 school year saw our sponsorship portfolio grow from 4,100 students in 2016-17 to 4,800 students across five Ohio cities: Dayton, Columbus, Cincinnati, Cleveland, and Portsmouth. We're also honored to have been recognized by the National Association for Charter School Authorizers (NACSA) as part of NACSA's Quality Practice Project.…

The Thomas B. Fordham Foundation's sponsorship annual report highlights our work with eleven schools that served 4,150 students in five Ohio cities during the 2016-17 school year. We value this opportunity to keep stakeholders and the public informed about our efforts, and provide information on each of the schools that we sponsor. Additionally,…