The document discusses Writing Across the Curriculum (WAC). WAC involves using writing strategies within various classrooms and disciplines to promote learning content. It encourages student participation, supports critical thinking, and helps students organize knowledge. WAC has two components - writing-to-learn strategies that engage students during lessons, and writing-to-demonstrate-knowledge strategies where students show what they've learned. The Common Core State Standards require literacy skills across disciplines, including writing routinely for various tasks.