Book excerpt: Curriculum compacting is one of the most well-researched and commonly used ways of differentiating instruction to challenge advanced learners. This practical and inexpensive method of differentiating both content and instruction enables classroom teachers to streamline the regular curriculum, ensure students' mastery of basic skills, and provide time for stimulating enrichment and acceleration activities. With information on the history and rationale of curriculum compacting as well as successful implementation strategies and multiple case studies, the second edition of Curriculum Compacting introduces the strategies that teachers need to understand to implement this differentiation strategy for high-potential, highly motivated, and academically talented and gifted students. 2017 NAGC Book of the Year Award Winner