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Summary

California’s Transitional Kindergarten (TK) program provides an additional year of schooling within the K–12 system that aims to prepare children for kindergarten. Launched a decade ago with limited eligibility, the program will be expanded to all four-year-olds by 2025–26. Little is known about TK’s longer-term impact—especially among multilingual students and students with disabilities, who might benefit from early identification. Taking stock of TK’s impact so far can help the state expand it successfully.
Characteristics, Outcomes, and Transitions
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Summary

The CORE districts studied characteristics, outcomes, and transitions of students with disabilities (SWDs). Specific learning disability was the most common type. Males, African Americans, English learners, and foster youth were overrepresented. Chronic absence was higher for SWDs with multiple disabilities. Most SWDs entered special education in K-4 and exited in grades 8-12. These results help identify who may need targeted support.
Lessons from the CORE Districts
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Summary

This report examines how California's education sector is embracing continuous improvement over standards-based reform. The study presents six lessons learned from PACE and CORE Districts' collaboration on the topic, including the complexity of embedding continuous improvement processes into school norms and the need for deliberate steps to build a culture conducive to continuous improvement. The report provides implications for broader continuous work in California and beyond, with three case studies providing more detail on exemplary practices in two districts and one school.
Publication author
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Summary

This report presents benchmarking data on self-report student surveys measuring social-emotional learning (SEL) from nearly half a million students in grades 4 through 12 across 8 CORE districts in California. The data provide means and standard deviations by construct, grade level, and subgroup, and can serve as a proxy for a nationally-normed sample for other schools across the country looking to administer the CORE survey.
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Summary

This report examines the stability of school effects on social-emotional learning (SEL) over two years in California's CORE districts. The correlations among school effects in the same grades across different years are positive but lower than those for math and ELA. While these effects measure real contributions to SEL, their low stability draws into question whether including them in school performance frameworks and systems would be beneficial.

Learning from the CORE Data Collaborative
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Summary

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.

Practices and Supports Employed in CORE Districts and Schools
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Summary

This study explores ten "outlier schools" in California's CORE districts that have strong social-emotional learning outcomes. The brief and infographic summarize the various practices found in these schools and the common implementation challenges faced. The findings offer lessons that can help other schools and districts implement social-emotional learning at scale.
Learning from the CORE Districts' Focus on Measurement, Capacity Building, and Shared Accountability
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Summary

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.

Multiple measures and the identification of schools under ESSA
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Summary

This report examines the Every Student Succeeds Act (ESSA) and how schools can be identified for support and improvement using a multiple measures framework. The authors find that different academic indicators measure different aspects of school performance and suggest that states should be allowed to use multiple measures instead of a summative rating. They also find that non-academic indicators are not given enough weight and suggest a clarification in federal policy.
Comparing Different Student Subgroup Sizes for Accountability
Publication authors
Published

Summary

This policy brief analyzes the implications of using various subgroup sizes for school-level reporting under the ESSA. Data from the CORE Districts shows that a subgroup size of 20+ offers clear advantages in representing historically underserved student populations. The authors also produced a supplementary report comparing subgroup sizes of 20+ and 30+ in response to new ESSA regulations.