Description: More is known than ever before about how to educate children successfully, especially those at risk for underachievement. High-quality instruction has special significance during the PreK-3rd years, when children master foundational skills and concepts, develop attitudes toward school, and form ideas about themselves as learners. In PreK-3rd: Teacher Quality Matters, the third in the FCD series of Policy to Action Briefs, series editor Rima Shore describes 1) Why effective teaching matters for student outcomes; 2) How schools can organize to sustain effective teaching in every classroom; and 3) What high-quality instruction looks like in PreK-3rd classrooms.