Instructors within the writing across the curriculum (WAC) movement leverage student writing for learning and engagement beyond the traditional English or composition classroom. To this end, WAC pedagogy foregrounds the benefits of real-world active learning strategies. Educators often find it logistically difficult to create sustainable versions of these realistic environments, however. The same challenges faced by writing instructors present themselves across disciplinary contexts, including ethics and computer science instruction. In this article, we describe our integrated ethics module linking first-year composition students with computer science capstone design teams to better integrate the study of ethics into the writing classroom while giving students more realistic contexts for practice. The tension between two prominent metaphors for learning – the swamp (the messy situationality of professional practice) and the scaffold (the building of progressively more challenging tasks for students out of smaller, simpler assignments) – guides our discussion of WAC-centered course design.