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EduDDI: An application of DDI 3.0 for Large-scale Assessments in Education

Presenter 1
Martin Mechtel
German Institute of Educational Progress (IQB)

For the monitoring of educational systems, large-scale assessments of student's archievements are conducted. The institutions involved in these studies need IT systems for the following steps: development of hierarchical structured questions, generation of booklets and codebooks, coding/rating, data processing, analyses, dissemination of datasets and reporting. In order to improve the efficiency of these systems, the reuse of questions and the analysis of one question throughout the whole set of studies is an crucial demand of the researchers. Therefore, any system used in that context must offer an easy link between data sets and the question bank(s).

At the German Institute for Educational Progress (IQB), a proprietary IT system for the generation of booklets has been developed and used for 4 years. This system will be expanded to the management of datasets as described above. But the internal datastructures and the tools will implement DDI 3.0 to ensure a sustainable and nationwide utilisation. The presentation covers the following issues: institutional arrangement to ensure a broad-based support, first sections of the DDI-model developed, architecture and first software tools.

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