Timothy D. Kanold explores how mathematics assessment and grading can either inspire or destroy student learning. This session is based on Mathematics Assessment and Intervention in a PLC at Work and Mathematics Homework and Grading in a PLC at Work (2018). Both are from Solution Tree’s Every Student Can Learn Mathematics series. Dr. Kanold reveals eight research-affirmed criteria for creating high-quality unit assessments (quizzes and tests) and the accurate scoring of those assessments. Participants also reflect on and answer the formative question “Now what?” when an assessment is returned to students. The session ends with a brief discussion about research-affirmed criteria for high-quality mathematics homework routines and practices. Participants in this session: • Use high-quality mathematics assessment-design criteria for evaluating the quality of current math quizzes and tests. • Consider using a protocol for the accurate scoring (grading) of all quizzes and tests. • Develop formative strategies for student response, intervention, and ownership of learning during and at the end of a mathematics unit of study. • Explore research and discussion tools to design highly effective mathematics homework routines and practices.