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.

This study explores the impact of reclassification on social-emotional learning skills (SEL) of English learners (ELs) in grades 4 to 8. Using a regression discontinuity design, the study found that reclassification improved academic self-efficacy by 0.2 standard deviations for students near the cutoff threshold. The results suggest that reclassification can positively influence the academic beliefs of ELs and the authors provide recommendations for districts to create practices that foster such positive beliefs.

This study explores the impact of county-level immigration arrests on the academic achievement, attendance, and perceptions of school climate and safety for Latinx and Latinx English learner students in California's CORE districts. The research found that there is a negative relationship between immigration arrests and these students' academic performance and school experiences. The study recommends policies and practices that can help schools and districts create safer, more welcoming environments for immigrant-origin students and families in the face of anti-immigrant actions.

Collaborative networks using continuous improvement principles can accelerate and spread learning. This brief highlights the importance of understanding the benefits of collaboration, building a culture of trust and vulnerability, and engaging in true collaborative work, not just "show and tell." These lessons can help network members work together effectively to improve outcomes for students in changing conditions.

Parental engagement is essential to improve academic outcomes for all students, particularly low-income, Black, and Latinx students. Distance learning has intensified the need for parental support, but state policies and tools for engagement are inadequate. Local Educational Agencies can remove barriers to data access and support parent engagement by following three key principles and taking related actions.

This study used data from California CORE Districts to explore whether changes in students' self-reported social-emotional learning (SEL) predicted changes in academic outcomes and attendance. The findings revealed that within-student changes in SEL were positively associated with improvements in English language arts (ELA) and math achievement, as well as attendance, and were consistent across various student subgroups.

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.