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ERIC Number: EJ895525
Record Type: Journal
Publication Date: 2010-Sep
Pages: 21
Abstractor: As Provided
Reference Count: 44
ISSN: ISSN-0924-3453
Using Growth Models to Monitor School Performance: Comparing the Effect of the Metric and the Assessment
Goldschmidt, Pete; Choi, Kilchan; Martinez, Felipe; Novak, John
School Effectiveness and School Improvement, v21 n3 p337-357 Sep 2010
This paper investigates whether inferences about school performance based on longitudinal models are consistent when different assessments and metrics are used as the basis for analysis. Using norm-referenced (NRT) and standards-based (SBT) assessment results from panel data of a large heterogeneous school district, we examine inferences based on vertically equated scale scores, normal curve equivalents (NCEs), and nonvertically equated scale scores. The results indicate that the effect of the metric depends upon the evaluation objective. NCEs significantly underestimate absolute individual growth, but NCEs and scale scores yield highly correlated (r greater than 0.90) school-level results based on mean initial status and growth estimates. SBT and NRT results are highly correlated for status but only moderately correlated for growth. We also find that as few as 30 students per school provide consistent results and that mobility tends to affect inferences based on status but not growth--irrespective of the assessment or metric used. (Contains 12 tables, 2 figures and 6 notes.)
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: Elementary Education; Grade 2; Grade 3; Grade 4; Grade 5
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: California