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Preprints are early versions of research articles that have not been peer reviewed. They should not be regarded as conclusive and should not be reported in news media as established information.
Applying the Rasch Growth Model (RGM) for the evaluation of achievement trajectories.
preprintposted on 2022-04-07, 21:44 authored by Leigh PattersonLeigh Patterson
Considerable interest lies in the growth in educational achievement that occurs over the course of a child’s schooling. This paper demonstrates a simple but effective approach for the comparison of growth rates, drawing on a method first proposed some 80 years ago and applying it to data from the Australian National Assessment Program. The methodology involves the derivation of a ‘meta-metre’ – a quantitative mode of variation in growth – which permits comparison between groups defined by time-invariant characteristics. Emphasis is placed upon the novel characteristics of the method and the valuable information it can provide. Unlike complex modeling procedures, the approach provides a parsimonious, easily-interpretable model of growth.
Declaration of conflicts of interestThe author declares no conflicts of interest
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Lead author institutionAustralian Curriculum, Assessment and Reporting Authority
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