In this study, the authors examined whether preservice teachers’ experiences with video analyses during teacher preparation had long-lasting effects on their reflective practices once they entered the profession. Specifically, they examined whether teachers who had opportunities to analyze student thinking and learning during teacher preparation, continued to do so when they reflected on their teaching effectiveness as full-time teachers. The authors found that teachers who attended the video-enhanced course during teacher preparation outperformed their counterparts in both the quality of evidence they drew upon and their attention to individual or subgroups of learners. The results highlight that different teachers thought differently about their lessons when asked whether they were effective.