The document discusses Webb's Depth of Knowledge (DOK) framework for categorizing the cognitive complexity of standards, objectives, and assessment items. It explains that DOK is a scale from 1-4 that measures the depth of understanding and processing required rather than just the difficulty of verbs or topics. Level 1 involves recall of facts, Level 2 basic skills and concepts, Level 3 strategic thinking, and Level 4 extended thinking such as analyzing and synthesizing across sources. Examples are provided for each DOK level to illustrate the distinction between levels. The document emphasizes that DOK is about the complexity of thinking demanded rather than just vocabulary words.