The Collaborative Writing Playbook is for instructors who would assign more writing in their courses if they could create meaningful assignments that complement course goals. The Playbook is for instructors who would assign collaborative writing if they could account for individual contributions to collaboratively written content and use assessment criteria consistent with course learning objectives. Instructors can overcome the workload obstacles by identifying five learning objectives that writing and course content have in common: discipline-specific objectives for critical thinking, research, synthesis, genre/structure, and editing/peer review. By aligning writing objectives with course learning objectives, instructors can design writing projects, tasks, and peer review roles that support rather than distract from course content.