Teacher professional development (PD) programs ideally evaluate how professional learning experiences empower teachers to be effective change agents in their disciplines and communities. The Khbrat ["experiences" in Arabic] program is a year-long, global teacher PD initiative launched by the Saudi Ministry of Education. The goal is to change the mindset of Saudi teachers through immersive experiences in the U.S. K-12 schools and university academic culture so that they can participate as effective "change agents" in the transformation of Saudi schools. Our mixed-methods study examined the impact of the Khbrat program on Saudi teachers' leadership, classroom experiences, and sociocultural levels; the findings inspire new directions for program design with key insights into teacher PD program evaluation.