JSM 2005 - Toronto

Abstract #304423

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Legend: = Applied Session, = Theme Session, = Presenter
Activity Number: 196
Type: Contributed
Date/Time: Monday, August 8, 2005 : 2:00 PM to 3:50 PM
Sponsor: Social Statistics Section
Abstract - #304423
Title: School Accountability via Hierarchical Linear Models
Author(s): Stephen Ponisciak*+ and Anthony S. Bryk and Stephen Raudenbush
Companies: Consortium on Chicago School Research and Stanford University and University of Michigan
Address: 1313 E 60th St, Chicago, IL, 60637, United States
Keywords: hierarchical ; cross-classified ; value-added ; education ; accountability ; student achievement

Much analysis of educational outcomes, prompted by the NCLB law, is focused on a snapshot of student performance or on simple test score trends without acknowledging factors that may affect student performance. Building on earlier work, we estimate student learning gains on the Iowa Tests of Basic Skills (ITBS) in the Chicago public schools at the level of the grade-within-school. We use a three-level hierarchical crossclassified model to examine the effects of schools on students. Our value-added model consists of repeated measures that are crossclassified by students and schools. We assume the effects of schools are cumulative, so, for example, the effect of a student's school in first grade remains with the student in fifth grade and beyond. Earlier models did not include assumptions about the form of the change in gains; in our model, we can include such assumptions and estimate the relevant parameters or we can use a simpler (but more computationally intensive) model that makes no such assumption. We conclude by comparing reading and math results (which are similar) and comparing our results with NCLB percentage proficient statistics (which are not similar).

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