International achievement comparison studies assess students on core subjects such as Reading, Mathematics and Science. Students who do not speak the test language at home can be expected to be disadvantaged because of language proficiency. The test language effect has not been given sufficient attention. The present study investigated probable…

In this article we are presenting the results of the research "The Connection between the Results in the National Assessment of Knowledge and the Pupils' Socio-cultural Environment, Instruction and Homework," taking place at the National Education Institute, Slovenia, in the years 2008/2009. In the introduction we are writing the…

Using 3 waves of the TIMSS data, this study investigates the relationship between 8th-graders' mathematics and science achievement and their self-perceptions on these 2 subjects. For within-country data, there is generally a positive relationship between students' achievement and the following 3 measures of their self-perception: how much they…