PART I: MODELLING EDUCATIONAL EFFECTIVENESS AT TEACHING, SCHOOL AND SYSTEM LEVEL -- Preface -- 1. An Overarching Conceptual Framework -- 2. Modelling Teaching and Learning -- 3. Defining the Key Factors in Instructional Effectiveness -- 4. Modelling School Effectiveness -- 5. School Effectiveness Research and the Meaning of the Most Important Effectiveness Enhancing Conditions -- 6. System Leveā¦