I. An Introduction to Comprehensive, Integrated, Three-Tiered Models of Prevention 1. Preventing and Managing Learning and Behavior Challenges in Our Schools: A Comprehensive, Integrated Approach 2. A Look at Evidence Surrounding Tiered Systems II. Overview of the Ci3T Implementation Manual 3. Designing and Implementing a Ci3T Model: Building a Primary Prevention Plan 4. Examining Tier 1 Efforts: Monitoring Treatment Integrity and Social Validity III. A Focus on Data-Informed Decision Making 5. Determining How Well Ci3T is Meeting the Goals: Procedures for Monitoring Overall Student Performance 6. Empowering Teachers with Low-Intensity, Teacher-Delivered Strategies 7. Supporting Students Who Require More than Primary Prevention Efforts: Tier 2 and Tier 3 IV. Moving Forward: Considerations for Successful Implementation 8. Understanding Implementation Science: Responsible Implementation of System Change Efforts