The 2015 Trends in International Mathematics and Science Study (TIMSS) involved 57 countries and 43 different languages to assess students' achievement in mathematics and science. The purpose of this study is to evaluate whether items and test scores are affected as the differences between language families and cultures increase. Using…

The Norwegian language has two written standards, Bokmål (majority variety) and Nynorsk (minority variety), and children receive their schooling in one or other of them. Pupils schooled in Nynorsk acquire the Bokmål variety simultaneously through extracurricular exposure and thus develop what may be termed "bidialectal literacy". In this…