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NewsTimes of San DiegoSeptember 9, 2026California

EdSource study confirms California law delaying school start times increases sleep and improves student health and academics

Photo: Times of San Diego

A study reports that California's state law delaying school start times for middle and high schools has increased student sleep hours, improved mental health, and raised academic outcomes. The state is already observing these positive results following the schedule change.

EducationStudent HealthSchool Start TimesAcademic Performance
Read the full story at Times of San Diego

Why It Matters

The findings document measurable changes in sleep duration, mental health, and academic performance for middle and high school students across California under the state-mandated schedule shift.

Key Facts

  • A study by EdSource confirms that California's state law delaying school start times has increased student sleep hours.
  • The schedule change has improved student mental health.
  • Academic results among students have risen following the shift.
  • California is already observing positive outcomes from the later start times.

Who's Mentioned

PersonTerra Ziporyn“Executive director of Start School Later”OrganizationNorthwestern“Expert institution assisting San Francisco Unified School District”OrganizationYale“Expert institution assisting San Francisco Unified School District”OrganizationStart School Later“Advocacy organization focused on school start times”PersonOsea Giuntella“Researcher at the University of Pittsburgh and co-author of the study”OrganizationEdSource“Independent newsroom focused on education that originally published the story.”OrganizationGeorgia Tech“Expert institution assisting San Francisco Unified School District”OrganizationUniversidad de Pittsburgh“Affiliation of researcher Osea Giuntella”OrganizationOficina Nacional de Investigación Económica“Published the report analyzing the effects of SB 328”locationCalifornia“State where the law delaying school start times was implemented.”OrganizationDistrito Escolar Unificado de San Francisco“School district cited for successful transportation redesign”OrganizationDepartamento de Educación de California“State education department noted regarding implementation support”