An Exploration of an Improved Aggregate Student Growth Measure Using Data from Two States

Autor/inn/en	Castellano, Katherine E.; McCaffrey, Daniel F.; Lockwood, J. R.
Titel	An Exploration of an Improved Aggregate Student Growth Measure Using Data from Two States
Quelle	In: Journal of Educational Measurement, 60 (2023) 2, S.173-201 (29 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-0655
DOI	10.1111/jedm.12354
Schlagwörter	Academic Achievement; Accountability; Decision Making; Computation; Sampling; Alternative Assessment; Measurement; Prediction; Weighted Scores; Accuracy; School District Size + Suchen Sie Ihr Suchwort? Schulleistung; Verantwortung; Decision-making; Entscheidungsfindung; Messverfahren; Vorhersage; School district; School districts; Size; Schuleinzugsbereich
Abstract	The simple average of student growth scores is often used in accountability systems, but it can be problematic for decision making. When computed using a small/moderate number of students, it can be sensitive to the sample, resulting in inaccurate representations of growth of the students, low year-to-year stability, and inequities for low-incidence groups. An alternative designed to address these issues is to use an Empirical Best Linear Prediction (EBLP), which is a weighted average of growth score data from other years and/or subjects. We apply both approaches to two statewide datasets to answer empirical questions about their performance. The EBLP outperforms the simple average in accuracy and cross-year stability with the exception that accuracy was not necessarily improved for very large districts in one of the states. In such exceptions, we show a beneficial alternative may be to use a hybrid approach in which very large districts receive the simple average and all others receive the EBLP. We find that adding more growth score data to the computation of the EBLP can improve accuracy, but not necessarily for larger schools/districts. We review key decision points in aggregate growth reporting and in specifying an EBLP weighted average in practice. (As Provided).
Anmerkungen	Wiley. Available from: John Wiley & Sons, Inc. 111 River Street, Hoboken, NJ 07030. Tel: 800-835-6770; e-mail: cs-journals@wiley.com; Web site: https://www.wiley.com/en-us
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01