Gender, Ethnic, and Socio-Economic Differences in Attainment and Progress: A Longitudinal Analysis of Student Achievement over 9 Years.

Follows up an earlier age cohort study done in the 1980s. Discovered that, although differences in achievement related to gender and socioeconomic factors remained consistent and generally increased over time, greater change was found in patterns of ethnic differences. Discusses possible explanations for the findings and implications for assessment. (MJP)