Effective data use is crucial for continuous improvement, but there is confusion about how it differs from data use for other purposes. This report explains what data are most useful for continuous improvement and presents a case study of how the CORE data collaborative uses a multiple-measures approach to support decision-making.

Many parts of California, particularly rural and desert areas, are often overlooked by policymakers and researchers, despite the growing number of students attending school there. The Antelope Valley region has seen steady increases in student enrollment, particularly of Hispanic/Latino(a) and African American students, English learners, and foster youth. This report highlights the needs of the Antelope Valley Union High School District and its feeder districts, and calls for greater focus on supporting high-needs populations outside of urban centers.

California and the US are undergoing a cultural shift in school accountability policies towards locally-determined measures of school performance. Lessons can be learned from the CORE districts, which developed an innovative accountability system, emphasizing support over sanctions, and utilizing multiple measures of school quality. The CORE districts' measurement system and collaboration hold promise for improving local systems, but efforts to build capacity remain a work in progress.

This study traces California's curriculum-related reforms in mathematics and science during the 1990s, examining the role of the California Department of Education and the state's shifting political and policy context. It analyzes the perceptions of state officials, experts, and the public and how they influenced state policy changes. The authors raise questions about problems associated with curriculum policy in California and presents policy recommendations mentioned during interviews and document analysis. The study does not assess the impact of curriculum on school practice.