The newly updated report is an essential tool for school leaders and practitioners alike, and is the single most authoritative source for effective K-12 teaching and learning practices across the content areas. This one volume brings together in readable, concise language the authoritative research on effective classroom practices in all major disciplines currently taught in elementary and secondary schools: the arts, foreign language, health, language arts, physical education, mathematics, social studies, and science, as well as generic practices that apply across all disciplines. This third edition includes over 100 research-based classroom strategies, and features a new chapter that synthesizes the research on high-performing school districts, and discusses ways school districts can support instructional improvement.