The document analyzes the impact of state and district policies on mathematics and science curricula in high schools, highlighting the fragmentation of educational policymaking and the varying influence of policy instruments. It details a study conducted across six states, emphasizing differences in district responses to state initiatives and the necessity for systemic school reform to enhance coherence in curriculum standards and classroom practices. Findings indicate that while policies have increased course enrollment in math and science, challenges remain regarding instructional quality and equitable access for low-achieving students.