A quadrant in the Rigor-Relevance (Teaching/Learning and Leadership) Framework researched by the International Center for Leadership in Education that focuses on 21st Century learning. Operating in Quadrant D, students have the ability to think in complex ways and apply their knowledge and skills in real-life, unpredictable situations. Quadrant D Leadership is an effective blending of vision and empowerment and involves an adaptive process by which leaders, staff, and students take action to improve teaching and learning in their school.