A Ukiah Unified School District bus in Ukiah, Calif. in Feb. 2022. (Dave Brooksher via Bay City News)

SACRAMENTO, CA., 9/7/2026 — California’s mandate requiring later start times for middle and high schools is already yielding results, with students sleeping more, reporting better mental health and scoring higher math and English scores, according to a new study.  

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Vani Sanganeria covers student health and wellbeing as EdSource’s Local News Fellow, a partnership with the UC Berkeley Graduate School of Journalism. She earned her Bachelor’s degree in Journalism...