This CALDER research brief builds on pioneering research by the Measures of Effective Teaching Project (Kane et al., 2013) and Jackson (2018) to...
Roddy Theobald
Roddy Theobald is a Managing Researcher at AIR and Deputy Director of CALDER. He received his PhD in Statistics from the University of Washington in 2015, and previously worked as a Research Assistant at the Center for Education Data and Research at the University of Washington and as a 7th-grade math teacher at Westlake Middle School in the Oakland (CA) Unified School District as a Teach For America corps member. His ongoing projects investigate teacher education and licensing, career and technical education, and special education in Hawaii, Massachusetts, Pennsylvania, and Washington.
Related Publications
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We used longitudinal staffing data from Pennsylvania to explore differences in special education personnel attrition across personnel categories,...
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This report provides formative data about the implementation of projects associated with the Pennsylvania Bureau of Special Education’s Attract,...
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We analyze student-level data on elementary special education identification in Washington state to explore how identification rates changed...
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We analyze student-level data on elementary special education identification in Washington state to explore how identification rates changed...
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Most states responded to the onset of the pandemic by temporarily granting teachers Emergency licenses. These licenses allowed teachers to work in...
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Most states responded to the onset of the pandemic by temporarily granting teachers Emergency licenses. These licenses allowed teachers to work in...
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The Elementary and Secondary School Emergency Relief Fund (ESSER) was the largest one-time federal investment in K–12 schools in history,...
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Who ends up in the teacher workforce is greatly influenced by who is admitted into teacher education programs (TEPs).
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Graduates of special education teacher education programs can teach in a range of special education settings, raising the potential that their...
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We study the impact of a bonus policy implemented by Hawai‘i Public Schools starting in fall 2020 that raised the salaries of all special...
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This report provides data about the special education teacher pipeline in Pennsylvania and projects associated with the Pennsylvania Bureau of...
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Nationally, more than 75% of individuals who are credentialed to teach are prepared in traditional college- or university-based teacher education...
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This study investigated the underexplored topic of teacher preparation program admissions processes by interviewing faculty and analyzing program...
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This qualitative study examines the information collected about applicants to mathematics or science teacher preparation programs (MSTPPs) and how...
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Prior research has connected characteristics of cooperating teachers who supervise student teaching to performance measures of the teacher...
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How to Measure a Teacher: The Influence of Test and Nontest Value-Added on Long-Run Student Outcomes
This paper examines how different measures of teacher quality are related to students’ long-run educational trajectories. We estimate teachers’...
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We use over 25 years of longitudinal data from Washington state to provide a descriptive portrait of the paraeducator workforce in the state....
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Several decades of research using school administrative data show that teacher quality is inequitably distributed across schools. But these...
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We use publicly available, longitudinal data from Washington state to study the extent to which three interrelated processes—teacher attrition...
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Three years into the COVID-19 pandemic era, concerns about teacher turnover and teacher shortages remain at the top of the education agenda.
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We use data on high school students and teachers from Washington state to connect the observable characteristics of career and technical education...
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We use data on high school students and teachers from Washington state to connect the observable characteristics of career and technical education...
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Student-teacher relationships are at the core of student experiences in schools and, arguably, fundamental to influencing student outcomes. Using...
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We describe the extent and predictors of staffing challenges faced by school districts in Washington state throughout the 2021–22 school year...
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Prior work on teacher candidates in Washington State has shown that about two thirds of individuals who trained to become teachers between 2005...
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Two recent CALDER studies published in Exceptional Children provide new evidence about special education teacher preparation and its implications...
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In this flash brief, we frame the magnitude of teacher attrition during the pandemic, including from the 2020–2021 school year to the 2021–22...
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CALDER Policy Brief 2-0116-1
This CALDER Explainer reviews empirical evidence about the relationship between specific aspects of...
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CALDER Policy Brief No. 3-1116-1
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CALDER Policy Brief No. 24-0421
"Sometimes a Simple Analysis Tells the Story"
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CALDER Policy Brief No. 22-0221
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CALDER Policy Brief No. 20-0620
One of the unfortunate consequences of the COVID-19 pandemic is that the sharp downturn in tax...
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A growing literature documents the importance of student teaching placements for teacher development. Emerging evidence from this literature...
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CALDER Policy Brief No. 6-0918-1
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A growing quantitative literature finds evidence that student teaching placements predict later outcomes of teacher candidates and their students...
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We used survey and administrative data from Washington State to assess the degree to which special education teacher preparation, district...
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We use data on over 14,000 teacher candidates in Washington state, merged with employment data from the state’s public schools and Unemployment...
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States are responsible for setting and evaluating the standards that teacher preparation programs (TPPs) must meet for accreditation. Despite the...
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We use a novel database of over 15,000 teacher candidates from 15 teacher education programs in Washington state to investigate the connections...
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We use teacher candidate test scores on the Massachusetts Tests for Educator Licensure (MTEL), linked to student and teacher outcomes in the state...
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We use data on the teacher preparation experiences and workforce outcomes of more than 1,300 graduates of special education teacher education...
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Prior research has shown that about 15% of teachers are hired into the same school in which they student taught, about 40% are hired into their...
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We leverage nationally representative data and statewide data from Washington to investigate trends in occupational career and technical education...
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We evaluate the predictive validity of the Massachusetts Candidate Assessment of Performance (CAP), a practice-based assessment of teaching skills...
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In many school districts the policies that regulate personnel are governed by collective bargaining agreements (CBAs) negotiated between teachers...
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We use longitudinal data from North Carolina and Washington to study the extent to which four processes—teacher attrition from each state...
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We use a novel database of the preservice apprenticeships (“student teaching placements”) of teachers in Washington State to investigate the...
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We exploit within-teacher variation in the years that teachers host an apprentice (“student teacher”) in Washington State to estimate the causal...
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We use comprehensive data on student teaching placements from 14 teacher education programs (TEPs) in Washington State to explore the sorting of...
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A burgeoning literature investigates the importance of student teaching placements for teacher candidate development, but an important perspective...
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Student teaching has long been considered the most important component of an effective teacher education program. Recently, new research is...
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We use longitudinal data on high school students in Washington State to assess the relationships between English Language Arts (ELA) teacher value...
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We use statewide data from Massachusetts to investigate teacher performance evaluations as a measure of teaching effectiveness....
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We use statewide data from Massachusetts to investigate teacher performance evaluations as a measure of teaching effectiveness....
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We use comprehensive data on student teaching placements from 14 teacher education programs (TEPs) in Washington State to explore the sorting of...
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We use panel data in Washington State to study the extent to which teacher assignments between fourth and eighth grade explain gaps between...
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Career and Technical Education, Inclusion, and Postsecondary Outcomes for Students With Disabilities
We use longitudinal data on all high school students in Washington State, including postsecondary education and workforce outcomes, to investigate...
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This policy brief reviews evidence about the extent to which disadvantaged students are taught by teachers with lower value-added estimates of...
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There is mounting evidence of substantial “teacher quality gaps” (TQGs) between advantaged and disadvantaged students, but practically no...
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We use longitudinal data from Washington State to provide estimates of the extent to which performance on the edTPA, a performance-based, subject-...
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We investigate the relationship between teacher licensure test scores and student test achievement and high school course-taking. We focus on...
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We find that teachers who student taught in...
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We use data from Washington state to examine two distinct stages of the teacher pipeline: the placement of prospective teachers in student...
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We investigate patterns of teacher mobility in districts with different collective bargaining agreement (CBA) transfer provisions. We use detailed...
In the News
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August 17, 2021Education Next
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February 4, 2021Disability Scoop
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May 21, 2020NCTQ
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February 18, 2020Eduwonk
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February 3, 2020NTCQ
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January 6, 2020NTCQ
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December 10, 2019Education Week
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November 24, 2018Seattle Times
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June 13, 2017Education Week
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July 11, 2016Education Week
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June 14, 2016Policy Analysis for California Education
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January 28, 2016Washington Monthly
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January 20, 2016Thomas B. Fordham Institute
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January 19, 2016The 74
Area of Expertise
- Special Education
- Teacher Collective Bargaining
- Teacher Education
- Teacher Quality
- Career and Technical Education