Building a stronger teacher workforce requires the thoughtful orchestration of multiple processes working together in a human capital system. This white paper presents a framework that can be used to take stock of current efforts to enhance the teacher workforce in school districts or educational organizations, as well as their underlying theories of how the teacher workforce improves over time. The paper refines and provides evidentiary support for a human capital system framework composed of four subsystems that ideally work together to build a stronger teacher workforce: (1) getting the right teachers in the right positions on time (Acquire); (2) supporting professional growth in school-based learning communities (Develop); (3) nurturing, rewarding, and challenging high-performing teachers (Sustain); and (4) informing evidence-based personnel decisions (Evaluate). Attention to this framework will engender a corps of teachers with the capacity and expertise to collectively facilitate enhanced educational outcomes.