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The utility of value-added estimates of teachers' effects on student test scores depends on whether they can distinguish between high- and low-productivity teachers and predict future teacher performance. This article studies the year-to-year variability in value-added measures for elementary and middle school mathematics teachers from five large Florida school districts. We find year-to-year correlations in value-added measures in the range of 0.2–0.5 for elementary school and 0.3–0.7 for middle school teachers. Much of the variation in measured teacher performance (roughly 30–60 percent) is due to sampling error from “noise” in student test scores. Persistent teacher effects account for about 50 percent of the variation not due to noise for elementary teachers and about 70 percent for middle school teachers. The remaining variance is due to teacher-level time-varying factors, but little of it is explained by observed teacher characteristics. Averaging estimates from two years greatly improves their ability to predict future performance.

I utilize longitudinal data covering all public school students in Florida to study the performance of charter schools and their competitive impact on traditional public schools. Controlling for student-level fixed effects, I find achievement initially is lower in charters. However, by their fifth year of operation new charter schools reach a par with the average traditional public school in math and produce higher reading achievement scores than their traditional public school counterparts. Among charters, those targeting at-risk and special education students demonstrate lower student achievement, while charter schools managed by for-profit entities peform no differently on average than charters run by nonprofits. Controlling for preexisting traditional public school quality, competition from charter schools is associated with modest increases in math scores and unchanged reading scores in nearby traditional public schools.

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Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. In this paper we analyze the impact of classroom peers on individual student performance with a unique longitudinal data set covering all Florida public school students in grades 3-10 over a five-year period. Unlike many previous data sets used to study peer effects in education, our data set allow us to identify each member of a given student's classroom peer group in elementary, middle, and high school as well as the classroom teacher responsible for instruction. As a result, we can control for individual student fixed effects simultaneously with individual teacher fixed effects, thereby alleviating biases due to endogenous assignment of both peers and teachers, including some dynamic aspects of such assignments. Our estimation strategy, which focuses on the influence of peers' fixed characteristics-both observed and unobserved-on individual test score gains, also alleviates potential biases due to error in measuring peer quality, simultaneity of peer outcomes, and mean reversion. Under linear-inmeans specifications, estimated peer effects are small to non-existent, but we find some sizable and significant peer effects within non-linear models. For example, we find that peer effects depend on an individual student's own ability and on the ability level of the peers under consideration, results that suggest Pareto-improving redistributions of students across classrooms and/or schools. Estimated peer effects tend to be smaller when teacher fixed effects are included than when they are omitted, a result that suggests co-movement of peer and teacher quality effects within a student over time. We also find that peer effects tend to be stronger at the classroom level than at the grade level. Terms of use: Documents in

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We analyze the impact of both pre-service preparation and in-service formal and informal training on the ability of teachers to promote academic achievement among students with disabilities. We employ rich student-level longitudinal data from Florida over a five-year period to estimate "value-added" models of student achievement. We find little support for the efficacy of in-service professional development courses focusing on special education. However, we do find that teachers who hold advanced degrees are more effective in boosting mathematics achievement of students with disabilities than are educators with only a baccalaureate degree. Further, pre-service preparation in special education has statistically significant and quantitatively substantial effects on the ability of teachers of special education courses to promote gains in achievement for students with disabilities, especially in reading. In particular, certification in special education, an undergraduate major in special education and the amount of special education coursework in college are all positively correlated with the performance of teachers in special education reading courses.

In this paper we analyze a unique micro-level panel data set encompassing all public school students in grades 3-10 in the state of Florida for each of the years 1999/2000-2003/2004. We are able to directly link each student and teacher to a specific classroom and can thus identify each member of a student's classroom peer group. The ability to track individual students through multiple classrooms over time and multiple classes for each teacher enables us to control for many sources of spurious peer effects such as fixed individual student characteristics and fixed teacher inputs, as well as to compare the strength of peer effects across different groupings of peers, across grade levels, and to compare the effects of fixed versus time-varying peer characteristics. We find mixed results on the importance of peers in the linear-in-means model, and resolve some of these apparent conflicts by considering non-linear specifications of peer effects. The results suggest that some grouping by ability may create Pareto improvements over uniformly mixed classrooms. In general we find that contemporaneous behavior wields stronger influence than peers' fixed characteristics. ___________________________________ * We wish to thank the staff of the Florida Department of Education's K-20 Education Data Warehouse for their assistance in obtaining and interpreting the data used in this study. The views expressed is this paper are solely our own and do not necessarily reflect the opinions of the Florida Department of Education. This research is part of a larger project assessing teacher quality being funded by grant R305M040121 from the U.S. Department of Education.