TY  - RPRT
        AU  - Dou, Jialu
AU  - Gihleb, Rania
AU  - Giuntella, Osea
AU  - Lonsky, Jakub
        TI  - Breaking the Early Bell: Lessons from the First Statewide Mandate on School Start Times
        PY  - 2025/May/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 17930
        UR  - https://www.iza.org/publications/dp17930
        AB  - This study evaluates the impact of California’s SB 328, the first statewide mandate delaying school start times for middle and high schools, on adolescent sleep, mental health, and academic outcomes. Using YRBS, ATUS, SEDA, and SAT data, we apply difference-in-differences and matched DID methods. SB 328 led to significant improvements in sleep duration and academic performance. We find suggestive mental health benefits, though estimates are imprecise, and substantial heterogeneity in effects, with stronger gains among boys and Hispanic students across both sleep and academic outcomes.
        KW  - Mental Health
KW  - Sleep
KW  - School Start Times
KW  - Academic Achievement
        ER  -