The document discusses Webb's Depth of Knowledge (DOK) model, which is used to align academic standards and assessments. It describes the four DOK levels - recall and reproduction (Level 1), skills and concepts (Level 2), strategic thinking (Level 3), and extended thinking (Level 4) - and provides examples of assessment items for each level. The key points are that DOK focuses on the cognitive demand required by an assessment item or standard, not its difficulty, and is used to ensure standards and assessments match in complexity as required by No Child Left Behind.