Stronger Teaching  A Human Capital Framework for a Stronger Teacher Workforce Carnegie Foundation for the Advancement of Teaching, 2013 Human capital is the largest single investment K-12 districts make. The Carnegie Foundation offers a four-part framework to take stock of current efforts to enhance the teacher workforce as well as underlying theories of how the teacher workforce improves over time. The four parts include: Get the right teachers in the right positions on time; support professional growth in school-based learning communities; nurture, reward, and challenge high-performing teachers; and inform evidence-based personnel decisions. The white paper also notes evaluation’s role in building a stronger teacher workforce. Performance Assessment  Teacher Learning Through Assessment: How Student-Performance Assessments Can Support Teacher Learning Center for American Progress, September 2013 The