Descriptions of growth in educational achievement often rely on the notion that higher-level students can do whatever lower-level students can do, plus at least one more thing. This article presents a method of supporting such descriptions using the data of a subject-area achievement test. Multiple content domains with an expected order of…

Current methods for obtaining reliability indices for mastery tests can be laborious. This paper offers practitioners tables from which agreement and kappa coefficients can be read directly and provides criterion for acceptable values of agreement and kappa coefficients. (TJH)

The Self-Description Questionnaire III (SDQ III) was designed to measure 13 factors of self-concept. The reliabilities of the factors were high, and correlations among them were low. Academic achievement measures in language and mathematics were correlated with self-concepts in the same areas but not with other self-concept factors. (Author/DWH)