Is plurality renounced in educational research?

This paper discusses whether research following PISA might constrain the plurality of empirical and theoretical approaches in empirical educational research. The significance of plurality in the field of science is reviewed initially; followed by the paper's central thesis. It is argued that qualitative and new quantitative empirical educational research seldom considers each other in key areas of the field, e.g. investigations on educational inequality. Though, 'dimming out' perspective-wise is marked rather a distinct feature of new quantitative educational research. Using the example of research on selection-based learning environments, students' habitus and the family's role in educational inequality, it is shown how a reflected linkage of both perspectives and mutual reception can be substantially beneficial to the findings of both paradigms.