The Standards Assessment Inventory (SAI) has provided relevant, educator-level data helping systems of all kinds -- states, districts, schools, provinces, and organizations -- gather and track data about the professional learning their educators experience. An online, confidential, valid, and reliable instrument administered to school-based instructional staff, the SAI asks teachers to provide their level of agreement with statements about the professional learning they experience. This article describes how the Rockdale County Public Schools in Georgia has used Learning Forward's Standards Assessment Inventory to measure alignment of Rockdale's professional learning practices to Learning Forward's Standards for Professional Learning. By measuring alignment to the standards has helped the district identify key focus areas and design professional learning around areas of growth identified by the SAI and aligned to school improvement goals. Through annual administration of the tool, the school district is able to track their progress on key indicators across time. With the 2022 revision of the Standards for Professional Learning, Learning Forward revised the framework for the SAI to measure professional learning practices aligned to the new, evidence-based set of 11 standards. For Rockdale, the new SAI will provide ongoing opportunities to track continued impact of professional learning in the system with a focus on the revised standards.