CA later school start law boosts sleep, scores | The BriefBrief
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Event Brief

CA later school start law boosts sleep, scores

Filed: Sep 12, 2026 at 12:00 PM ET
Summary: California’s 2019 requirement for later school start times is showing measurable gains, with new research finding improved student sleep and mental health since 2022. The study also reports better performance in math and English, earning the policy high marks.
WHO: California students and schools; researchers conducting the new study
WHAT: New research finds California’s later school start-time law (2019) is improving student sleep, mental health, and math/English test performance since 2022.
WHEN: Sep 12, 2022
WHERE: California
WHY: Routine/scheduled item — no distinct cause reported beyond the event itself.

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