Darling-Hammond, LindaBall, Deborah Loewenberb2023-05-222023-05-221998-11-012015-05-12https://repository.upenn.edu/handle/20.500.14332/8414In this report, Ball and Darling-Hammond discuss the relationship between teacher knowledge and student performance; they summarize what the research suggest about what kinds of teacher education and professional development teachers need in order to learn how ot teach to high standards; and they describe what states are doing to provide these opportunities for teacher learning, and with what effects.Teacher Education and Professional DevelopmentReport