Iglu 2021

In 2021, Germany participated for the fifth time in the International Primary School Reading Study (IGLU), which examines the reading competence of fourth graders. This scale manual documents all the instruments used in Germany. This includes both the German-language versions of the internationally used instruments and the national extensions. The descriptive statistics and indicators reported in this volume provide insights into the distributions of responses and the data quality. Additionally, system and organizational variables, as well as sampling and weighting variables, are documented. To facilitate work with the datasets, this scale manual complements the materials provided by the international study management elsewhere.