If your professional learning seems stalled, maybe you could put yourself and your colleagues in the driver's seat of professional development. The authors describe a professional learning approach that gives teachers both a say in what they focus their learning on and a chance to practice and refine teaching strategies that they hope to master--teacher driven observation. At the heart of this approach are teacher-peers observing lessons and objectively collecting data--through scripting, counting, or tracking methods. Using an extended example, Dolci Grimm and her coauthors show how a teacher would create a focus question she wants to learn about, engage peers in observing within her classroom to collect data centered on that important question, and debrief with the observation team in a way that uses that data to drive realization about where her teacher's practice needs to change.