Cross-disciplinary self-studies and peer coaching have separately been shown to offer teacher educators meaningful professional development opportunities. However, the teacher educator literature has said little about combining cross-disciplinary self-studies with peer coaching. In this article, the authors report a two-year cross-disciplinary peer-coaching self-study by experienced teacher educators, one from English Language Arts and one from Mathematics Education. The purpose of the self-study was to examine the connections that bridge the two disciplines and the differences between disciplines that offer new perspectives. Results revealed important process connections involving standards for practice and academic vocabulary. The self-study also illuminated meaningful new perspectives about what questions are asked during whole-class discussion and how data is generated during student collaboration. This study demonstrates the benefits of combining cross-disciplinary teacher educator collaboration with peer coaching and has implications for individual teacher educators and teacher education programs.