Presents a brief overview of good research design and related statistical concepts in deliberately non-technical language and argues that an awareness of the basic principles of valid research on the part of teachers and researchers is necessary to put the findings of language and education research into proper perspective. (Author/CB)

This paper analyzes a research project that maps implementation efforts of comprehensive and mandated change at the primary school level in The Netherlands. In examining this large-scale national reform program, the report deals with schools whose innovation efforts acquired funding from the central education department in return for their local…