This document discusses rigor and 21st century skills in education. It defines rigor and provides examples of depth of knowledge levels. It also discusses how to observe and collect evidence of student skills through observation, student work, and conversation. The document provides a checklist for providing quality feedback to students. It discusses moving from a culture of grading to a culture of learning, including eliminating things like averaging grades and homework from grades. Finally, it discusses aligning educational systems and goals to focus on content, skills, and attributes needed for students.