A PROBLEM IN CALCULATING GROUP SCORES ON NORM-REFERENCED TESTS

Norm-referenced standardized achievement tests are designed, and commonly used, for obtaining group scores. Various methods are used to calculate and express group scores in terms of common derived scores, such as percent ile ranks. Publishers' scaled scores are ordinarily used in these procedures, with the result that the group scores can possess anomalous characteristics. The group scores can vary widely, depending on not only the measure of central tendency but also the type of derived score employed. A reason for this situation is hypothesized to be the use of inappropriate statistical procedures to develop publishers' scaled scores. Practitioners need to be aware of this problem and to document their procedures when calculating and reporting group scores. Test publishers are urged to avoid the use of scaling procedures that are seen as responsible for this problem.     

SCRAMBLING CONTENT IN ACHIEVEMENT TESTING: AN APPLICATION OF MULTIPLE MATRIX SAMPLING IN EXPERIMENTAL DESIGN

This study was designed to research the question of scrambling item content in the construction of achievement tests, so that very general implications could be drawn for both examinee and item populations. To achieve this generality, the methodology of multiple matrix sampling was combined with a simple two group experimental design: a random group of 8th graders responded to mathematics, science, social studies, reading, and language arts achievement items organized in a scrambled (random) test format, while another random group responded to the same items organized in a fixed (segregated by subject matter) test format. The results indicated that scrambling cognitive test items has minimal or no effect on mean examinee test performance or on any of the other parameters included in the analysis.     

Adjustment of Black Students at a Historically White South African University

The adjustment of black African students to what, under apartheid, were white universities has long been a concern for South African educators. Dimensions of adjustment to university were examined for 339 African black and white freshmen attending a historically white South African university, using the Student Adaptation to College Questionnaire. No significant differences were found between black African and white participants on academic adjustment or institutional commitment. However, black African participants reported significantly poorer levels of social adjustment, and somewhat poorer levels of personal-emotional adjustment. Further investigations found relationships between academic performance, race and additional variables hypothesised to be associated with adjustment.     

What's Wrong with Private Schools

The aim of this article is to demonstrate the respects in which private schools are unfair, and why they pose a threat to the well‐being of not only those who are excluded on financial grounds, but to democratic equality and social cohesion in general. The shortcomings associated with relying on a form of educational provision that is merely ‘adequate’ are rendered explicit, and the article concludes with a consideration of a variety of measures that might go some way towards nullifying the harmful effects of private schools, the objections to which are sufficiently strong as to warrant a prima facie case for the abolition of such schools.