She directs the University Writing Program and works with 40 graduate assistants, several instructors, and many undergraduate students. She teaches graduate and undergraduate courses in literacy studies, rhetoric and cultures, computers and composition. Her book-length projects include Technologies and Literacies: Histories, Experiences, and Practices, Weaving a Virtual Web: Practical Approaches to New Information Technologies, Alternative Rhetorics: Challenges to the Rhetorical Tradition (with Laura Gray-Rosendale), and Social Change in Diverse Teaching Contexts: Touchy Subjects and Routine Practices (with Nancy G. Barron and Nancy Grimm). Gruber's work on cybertheories, feminist rhetorics, composition, and cultural studies can be found in various journals and edited collections.