The cognitive rigor of college and career readiness standards (CCRS) demand that students demonstrate different levels of thinking as categorized by Bloom's Revised Taxonomy and understand and use their depth of knowledge as designated by Webb's DOK Levels. However, what exactly is depth of knowledge? How do Webb's DOK Levels describe four different and deeper ways students and demonstrate their learning? Why is the DOK Wheel inaccurate? In this session, participants will learn how depth of knowledge clarifies the cognitive demand of academic standards, activities, and assessments. They will also learn how Webb's DOK Levels can be used as a multi-tiered system of support for delivering instruction, responding to intervention, extending learning, and making modifications for students who receive and require specialized services and support to achieve and surpass grade-level goals and expectations.