Changing School Start Times: Impact on Student, Family, Teacher, and Community Health

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

118000 participants

Study Classification

OBSERVATIONAL

Study Start Date

2017-04-11

Study Completion Date

2021-07-31

Brief Summary

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Sleep is not an optional luxury, but a fundamental biological need, essential for health and well-being. Insufficient sleep is a significant public health issue, with 69% of adolescents in America obtaining less than the minimum requirement of 8 hours of sleep per night. Early school start times has been identified as the most significant and modifiable factor that restricts sleep duration in adolescents. The American Academy of Pediatrics recommended in 2014 that all middle and high schools start no earlier than 8:30 a.m., yet few school districts have implemented this change. In fall 2017, the Cherry Creek School District, a diverse district of almost 55,000 students outside Denver, changed school start times. Although previous studies have shown increased sleep duration, decreased daytime sleepiness, and improved academics following start time changes for secondary students, there remains an urgent need to understand how this policy impacts health and well-being for all students, including youth in elementary school. Recognizing that students are part of a complex system that includes parents, school staff, and the community, this observational study will be a multi-year, broad-based evaluation that includes key stakeholders, multiple sources of quantitative data (i.e., surveys, academic records, district nursing electronic health records), contextual qualitative data (i.e., open-ended surveys and focus groups), and community-based outcomes (i.e., data on vehicle crashes and juvenile crimes). The primary hypothesis is that later school start times will have a positive impact on middle and high school students sleep and health outcomes, while earlier school start times will have a neutral impact on elementary school students sleep and health outcomes.

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Detailed Description

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Conditions

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Sleep

Study Design

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Observational Model Type

ECOLOGIC_OR_COMMUNITY

Study Time Perspective

PROSPECTIVE

Study Groups

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Students Grades 3-12

Change in school start times

Intervention Type OTHER

Elementary start times changed from 9:00 a.m. to 8:00 a.m.; middle school start times changed from 8:00 a.m. to 8:50 a.m.; high school start times changed from 7:10 a.m. to 8:20 a.m.

Parents of Students Grades K-12

Change in school start times

Intervention Type OTHER

Elementary start times changed from 9:00 a.m. to 8:00 a.m.; middle school start times changed from 8:00 a.m. to 8:50 a.m.; high school start times changed from 7:10 a.m. to 8:20 a.m.

School Based Teachers and Staff Grades K-12

Change in school start times

Intervention Type OTHER

Elementary start times changed from 9:00 a.m. to 8:00 a.m.; middle school start times changed from 8:00 a.m. to 8:50 a.m.; high school start times changed from 7:10 a.m. to 8:20 a.m.

Interventions

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Change in school start times

Elementary start times changed from 9:00 a.m. to 8:00 a.m.; middle school start times changed from 8:00 a.m. to 8:50 a.m.; high school start times changed from 7:10 a.m. to 8:20 a.m.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Students in grades 3-12 enrolled in the school district
* Parents of students in grades K-12 enrolled in the school district
* School-based teachers and staff in grades K-12 in the school district