Students as Teachers programs are prevalent, though assessments within these programs are lacking. A workplace-based assessment for clinical teaching was developed to foster formative feedback and support learner growth. Feedback narratives were analyzed to identify student teaching behaviors and demonstrated the themes medical knowledge, professionalism, communication, and teaching skills, which were subcategorized as clinical relevance, learner stage appropriateness, use of evidence-based teaching strategies, learning environment, feedback-related, and time-appropriate. This analysis supports the use of the assessment form for student teachers in the clinical environment as students received construct-relevant feedback from various raters while teaching in multiple settings.