Expeditionary Learning teachers and school leaders work together to ensure that a set of school-wide, standards-based curriculum maps acts as the foundation for all planning and instruction. The maps incorporate all required standards and college readiness skills and are revised as needed over time. The maps describe a vertical sequence of learning expeditions and projects, and they define the key content and skills that need to be addressed at each grade level and discipline. The maps guard against unnecessary repetition of content across grades and ensure appropriate repetition of skills and concepts.Expeditionary Learning teachers and school leaders work together to ensure that a set of school-wide, standards-based curriculum maps acts as the foundation for all planning and instruction. The maps incorporate all required standards and college readiness skills and are revised as needed over time. The maps describe a vertical sequence of learning expeditions and projects, and they define the key content and skills that need to be addressed at each grade level and discipline. The maps guard against unnecessary repetition of content across grades and ensure appropriate repetition of skills and concepts.