The purpose of this study was to investigate whether teachers' engagement in research fosters teachers' professional development and school development. We investigated changes in teachers' professional behavior, the impact of such changes, and factors that affect such changes. Questionnaires were distributed among more than hundred teachers who…

We wanted to assess the quality of research conducted by Dutch secondary education teachers. We therefore needed to investigate the criteria for evaluating teacher research. The research timeline of this study covered four school years. We analyzed research reports and evaluation forms. We found that five quality criteria are useful for assessing…