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Guerere, Claudia – ProQuest LLC, 2013
Scores from value-added models (VAMs), as used for educational accountability, represent the educational effect teachers have on their students. The use of these scores in teacher evaluations for high-stakes decision making is new for the State of Florida. Validity evidence that supports or questions the use of these scores is critically needed.…
Descriptors: Teacher Evaluation, Accountability, School Districts, Validity
Lipscomb, Stephen; Teh, Bing-ru; Gill, Brian; Chiang, Hanley; Owens, Antoniya – Mathematica Policy Research, Inc., 2010
This report summarizes research findings and implementation practices for teacher and principal value-added models (VAMs), as a first step in the Team Pennsylvania Foundation's (Team PA) pilot project to inform the development of a full, statewide model evaluation system. We have selected 21 studies that represent key issues and findings in the…
Descriptors: Pilot Projects, Outcomes of Education, Principals, Models
Horng, Eileen Lai; Klasik, Daniel; Loeb, Susanna – National Center for Analysis of Longitudinal Data in Education Research, 2009
School principals have complex jobs. To better understand the work lives of principals, this study uses observational time-use data for all high school principals in Miami-Dade County Public Schools. This paper examines the relationship between the time principals spent on different types of activities and school outcomes including student…
Descriptors: School Effectiveness, Principals, High Schools, Time Management
Cypress, Beulah K. – 1973
The potential of the Rasch model to develop scores, on a ratio scale, suitable for interindividual comparisons, from intact groups with disparate distribution characteristics was investigated. The specific problems studied were: (1) the effects of skewed test score distributions on the ability parameter of the Rasch measurement model; (2) the…
Descriptors: Achievement Tests, Data Analysis, Error of Measurement, Measurement Instruments