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North Carolina

School Segregation under Color-Blind Jurisprudence: The Case of North Carolina

This paper uses administrative data for the public K-12 schools of North Carolina to measure racial segregation in the public schools of North Carolina. Using data for the 2005/06 school year, the authors update previous calculations that measure segregation in terms of unevenness in racial enrollment patterns both between schools and within schools. They find that classroom segregation generally increased between 2000/01 and 2005/06, continuing, albeit at a slightly slower rate, the trend observed over the preceding six years.

Teacher Salary Bonuses in North Carolina

Since the 1996/97 school year, North Carolina has awarded bonuses of up to $1,500 to teachers in schools that exhibit test score gains above certain thresholds. This article reviews the details of the bonus program, describes patterns of differences between schools that qualify for bonuses of differing amounts, and presents basic data to address the question of whether the bonus program has improved student achievement, or has led to a narrowing of racial or socioeconomic achievement gaps.

Public School Choice and Integration: Evidence from Durham, North Carolina

This paper uses evidence from Durham, North Carolina to examine the impact of school choice on racial and class-based segregation across schools. The findings suggest that school choice increases segregation. Furthermore, the effects of choice on segregation by class are larger than the effects on segregation by race. These results are consistent with the theoretical argument—developed in sociology and economics literature—that the segregating choices of students from advantaged backgrounds are likely to outweigh any integrating choices by disadvantaged students.

Teacher Credentials and Student Achievement in High School: A Cross-Subject Analysis with Student Fixed Effects

One of the first papers to ever estimate teacher effects at the secondary school level, this groundbreaking work presents evidence that teacher credentials affect secondary school student success in systematic ways and to a significant, policy-relevant extent. We use data on statewide end-of-course tests in North Carolina to examine the relationship between teacher credentials and student achievement at the high school level. We find compelling evidence that teacher credentials affect student achievement in systematic ways and that the magnitudes are large enough to be policy relevant.

How and Why Do Teacher Credentials Matter for Student Achievement?

In this paper, the authors use a ten-year span of longitudinal data from North Carolina to explore a range of questions related to the relationship between teacher characteristics and credentials, on the one hand, and student achievement on the other. They conclude that a teacher's experience, test scores and regular licensure all have positive effects on student achievement, with larger effects for math than for reading.

High Poverty Schools and the Distribution of Teachers and Principals

The central question for this study is how the quality of the teachers and principals in high poverty schools in North Carolina compares to that in the schools serving more advantaged students. A related question is why these differences emerge. The consistency of the patterns across many measures of qualifications for both teachers and principals leaves no doubt that students in the high poverty schools are served by school personnel with lower qualifications than those in the lower poverty schools. Moreover, in many cases the differences are large.

School Based Accountability and the Distribution of Teacher Quality Across Grades in Elementary Schools

We use North Carolina data to explore whether the quality of teachers in the lower elementary grades (K-2) falls short of teacher quality in the upper grades (3-5) and to examine the hypothesis that school accountability pressures contribute to such quality shortfalls. Our concern with the early grades arises from recent studies highlighting how children’s experiences in those years have lasting effects on their later outcomes.

Charles Clotfelter

Charles T. Clotfelter is the Z. Smith Reynolds Professor of Public Policy Studies, Professor of Economics, and Professor of Law at Duke University, where he has taught since 1979.  Dr. Clotfelter is Director of the Center for the Study of Philanthropy and Voluntarism at Duke and is a Research Associate with the National Bureau of Economic Research. Dr. Clotfelter is is a member of the CALDER North Carolina team.

Helen Ladd

Helen (Sunny) F. Ladd is the Edgar Thompson Professor of Public Policy Studies and professor of economics at Duke University. She is a prolific researcher in the field of education policy, a member of the CALDER management team, and leads the work of the North Carolina team. She is also the co-editor for theJournal of Policy Analysis and Management.