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This chapter examines how crucial input and process characteristics of schooling are related to cognitive student outcomes. It was hypothesized that teacher quality predicts instructional quality and student achievement, and that instructional quality in turn predicts student achievement. The strengths of these relations may vary across countries, making it impossible to draw universal conclusions. However, similar relational patterns could be evident within regions of the world. These hypotheses were investigated by applying multi-level structural equation modeling to grade four student and teacher data from TIMSS 2011. The sample included 205,515 students from 47 countries nested in 10,059 classrooms. Results revealed that teacher quality was significantly related to instructional quality and student achievement, whereas student achievement was not well predicted by instructional quality. Certain characteristics were more strongly related to each other in some world regions than in others, indicating regional patterns. Participation in professional development activities and teachers' sense of preparedness were, on average, the strongest predictors of instructional quality across all countries. Professional development was of particular relevance in Europe and Western Asian/Arabian countries, whereas preparedness played an important role in instructional quality in South-East Asia and Latin America. The ISCED level of teacher education was on average the strongest predictor of student achievement across all countries; this characteristic mattered most in the Western Asia/Arabia region.

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The effectiveness of teacher education was examined by taking two indicators into account: future teachers’ mean achievement on a paper-and-pencil test as an indicator of quality, and the variability of teacher achievement due to background characteristics as an indicator of equity. In detail, the effects of gender and language on mathematics content knowledge and mathematics pedagogical content knowledge were examined. The analyses were embedded in the International Association for the Evaluation of Educational Achievement’s Teacher Education and Development Study in Mathematics, and they referred to primary teachers from 15 countries in their final year of teacher education. The study revealed significant cultural differences in the effectiveness of teacher education. Gender and language effects could be decomposed into direct and indirect effects. The latter represented a combination of differential choices of teacher education programs according to background and differential achievement of teachers from these programs. Implications for educational policy in the United States are discussed.

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