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…

Many articles and reports have reviewed, researched, and commented on international assessments from the perspective of exploring what is relevant for the United States' education systems. Researchers make claims about whether the top-performing systems have transferable practices or policies that could be applied to the United States. However,…