Collaborative group work is common in writing classrooms, especially ones assigning digital projects. While a wealth of scholarship theorizes collaboration and advocates for specific collaborative pedagogies, writing studies has yet to address the ways in which privilege tied to race, gender, class, and other identity characteristics replicates itself within student groups by shaping the responsibilities individual group members assume, thereby affecting students' opportunities for learning. Such concerns about equity are especially pressing where civically and professionally valuable twenty-first century digital literacies are concerned. This article uses theories of cultural capital and the participation gap to (1) analyze role uptake in case studies of diverse student groups and (2) suggest ways to expand writing studies' current use of metacognition to address such inequities.