This article explores how the development of mother-tongue instruction (MTI) policies in the Danish welfare state have created varying notions of difference and sameness in the schooling of migrant students and how they experience these notions locally in practice. Based on an analysis of MTI's policy history and oral history interviews with…

Ability test scores were decomposed into district, class, and individual components. First-order factor analyses at the individual level showed the usual Primary Mental Abilities test pattern. Second-order analyses grouped the primary factors into one power and one speed factor. Decomposition of variances in multilevel educational research is…

According to Cronbach's method of data analysis--which decomposes individual scores into separate components for different levels of aggregation--data collected for an investigation of the development of individual differences in ability test scores from grade 4 through grade 9 were grouped into school district, class, and individual components.…