Vivian Mihalakis (Deputy Director, Bill and Melinda Gates Foundation), Kara Jackson (Associate Professor, University of Washington), and Hannah Neiman (Research Scientist, University of Washington) lead a discussion on practical measurement of teachers’ PD experiences. They discuss the importance of creating engaging and impactful professional development for teachers, the value of gathering actionable feedback from them to improve future PD experiences, and the challenges inherent to gathering actionable feedback.