This study investigated the knowledge and experiences of practicing teacher educators and learn from them regarding what they believe they needed to know to do their work well. The authors use Cochran-Smith and Lytle’s theorizing about “relationships of knowledge and practice” to understand knowledge essential to teacher educating. The findings reveal that practicing teacher educators often feel unprepared to assume their role. The implication is that much work is needed in the academy to help both experienced and novice teacher educators become conscious of their own biases and subjectivities, develop skills and sensitivities that can support social justice teaching and researching, and build confidence as advocates for all learners and communities.