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Download full textWilliamson, Gary L.; And Others – 1988
A longitudinal study of achievement data from public schools in Durham County, North Carolina, was undertaken to examine individual growth curves as well as to chart the progress of educational institutions and the effects of aggregation on the study of growth. A two-level hierarchical linear model was used in the study to specify individual…
Descriptors: Academic Ability, Academic Achievement, Elementary Education, Individual Development
