START SCHOOL LATER
  • About Us
    • Mission and Goals
    • Who We Are >
      • Board of Directors
      • National Team
      • Local Chapters
      • Advisory Board
      • Coalition Partners
    • Annual Report
    • Bylaws
    • SSL News >
      • Press Releases
      • Newsletters
      • Blog
  • Learn More
    • School Start Times >
      • Why Change?
      • Wake Up Calls (Fast Facts)
      • Key Position Statements
      • Success Stories
      • Legislation
      • Myths and Misconceptions
    • Sleep Education >
      • Let's Sleep!
      • Sleep 101 - College
      • Sleep Calculator
      • Workshops and Webinars
    • Legislation
  • Get Involved
    • Join our Mailing List
    • Contact Us
    • Donate
    • National Conference 2024
    • Find a Local Chapter
    • Sign our Petition
  • Get Resources
    • Bookstore
    • Flyers, Posters, Videos, etc.
    • Implementation Help
    • Reference and Resource List
Donate

Adolescent Sleep
​Health Research Studies and Articles

Become a Member
Our National Petition

Professional Health Organizations 
  • American Academy of Pediatrics 
    • Let Them Sleep: AAP Recommends Delaying Start Times of Middle and High Schools to Combat Teen Sleep Deprivation
    • AAP Study School Start Times for Adolescents 
  • American Medical Association 
    • AMA Supports Delayed School Start Times to Improve Adolescent Wellness
  • American Association of Sleep Medicine 
    • AASM - Help Your Teen Recharge with Sleep 
    • AASM - Sleep Recharges You 
    • AASM Journal of Clinical Sleep Medicine - Permanent Standard Time Position “Daylight saving time increases our morning exposure to darkness and evening exposure to sunlight, the most powerful timing cue for the human body clock,” said Dr. Shannon Sullivan, chair of the American Academy of Sleep Medicine Public Safety Committee and clinical professor of sleep medicine at Stanford University School of Medicine. “The time change causes misalignment between the body’s daily rhythm and the clock, making it harder to fall asleep at night, disrupting sleep quality, and leading to sleep loss which can negatively impact health and safety. DST results in more darkness in the morning hours, and more light in the evening hours. Adopting permanent DST also would undo the benefits of delaying start times for middle schools and high schools.” 
  • Centers for Disease Control  
    • CDC Healthy Living: Schools Start Too Early
    • CDC Sleep and Sleep Disorders 
  • American Psychological Association 
    • APA Later School Start Times Promote Adolescent Well-Being 
  • National Sleep Foundation
    • ​Adolescent Sleep Health and School Start Times: Setting the Research Agenda for California and Beyond. A Research Summit Summary (January 2022)

Research Studies
  • Research Finds Earlier Start Times Have Little Effect on Elementary School Outcomes CLICK HERE & Video CLICK HERE (American Educational Research Association)
  • Commonwealth of PA Joint State Government Commission - Sleep Deprivation in Adolescents: The Case for Delaying Secondary School Start Times (full report) + Click here to access report summary
  • RAND Corporation Later School Start Times in the U.S. an Economic Analysis
    • Washington Post News Article link about the research: Letting Teens Sleep in Would Save the Country Roughly $9 Billion a Year
    • New York Times Article about the research: The Economic Case for Letting Teenagers Sleep a Little Later
    • RAND Corporation Sleep Blog
  • UCLA Health & Behavior Sleep-deprivation Study
    • UCLA-led study blames mental lapses on sleep-deprived brain cells
    • Video about the study and Study Link on Nature Medicine
  • Penn State Research -  Teens May Get More Sleep When School Starts Later
  • UC Berkley & Northeastern Illinois U. - Poor Grades Tied to Class Times & Biology 
  • University of Washington, Seattle WA - Sleep more in Seattle: Later school start times are associated with more sleep and better performance in high school students​​
  • University of Minnesota -
    • ​Examining the Impact of Later High School Start Times on the Health and Academic Performance of High School Students: A Multi-Site Study
    • Report Prepared for Minnesota Public School by Kyla Wahlstrom, Ph.D. , University of Minnesota - Elementary Feedback on Changed Start Times
  • Rutgers University - Delaying School Start Start Times Not Only Improves Health but Reduces Crime 
  • The Impact of School Start Times on Adolescent Health and Academic Performance
  • University of North Carolina at Chapel Hill - Answering the Bell: High School Start Times and Student Academic Outcomes
  • MedPage Today - Kids With High Step Count, Less Screen Time See Lower Obesity Risk (February 2023)
  • National Sleep Foundation
    • ​Adolescent Sleep Health and School Start Times: Setting the Research Agenda for California and Beyond. A Research Summit Summary (January 2022)
Sleep Health News
  • It’s Time to Do Away With Early School Start Times (Time Essay) January 2025 CLICK HERE
  • ​Why I Support Legislation to Start School Later (Terra Ziporyn) (January 2025) CLICK HERE
  • Article : Science Says Teens Need More Sleep. So Why Is It So Hard to Start School Later CLICK HERE (11/6/2023)
  • How teenagers’ lack of sleep is taking a toll on their mental health (PBS Oct 2023 8m 35s) - CLICK HERE
  • How good sleep habits affect your overall health (PBS May 2023 6m 10s) - CLICK HERE
​​Additional studies (Start School Later Research Database Wiki) - CLICK HERE

PA Start School Later Chapter Leader Gail Karafin, EdD ​School Psychology Board Articles
Click to download article below: March 2020 - ​PENNSYLVANIA EDUCATORS ARE SEEKING INFORMATION ABOUT CHANGING SECONDARY SCHOOL START TIMES
gail_karafin_-_march_2020_pa_psychologist_article__1___2___1_.pdf
File Size: 196 kb
File Type: pdf
Download File

About Us
Board of Directors
National Team
Advisory Board
Coalition Partners
Endorsements
Bylaws
​
​Press Releases
​
Newsletters
​Blog

Start School Later at Work
Student Hall of Fame
Healthy Hours ​
Local Chapters 
Nondiscrimination Policy
Privacy Policy 
Learn More
Why Change
Wake Up Calls (Fast Facts)
Position Statements
Success Stories
Legislation
Myths and Misconceptions
Sleep Calculator


Get Involved

Find or Join a Chapter
Sign a Petition​
Subscribe to our Mailing List
​Volunteer
Donate 
Become a Supporting Member
Resources
Bookstore
Research and References
Implementation Help
Presentations
​

Contact Us
Media Requests
General Requests ​
Change or Cancel Membership
Change Membership Information

Chapter Leaders (Log-in required)
Connect With Us!
Start School Later, Inc. 
574E Ritchie Highway #164
Severna Park, MD 21146
​© 2011 - 2025
Start School Later, Inc. is a 501(c)(3) non-profit organization dedicated to healthy, safe, equitable school hours. 
​
Start School Later®, StartSchoolLater.net, and the Start School Later logo are trademarks of Start School Later, Inc.
  • About Us
    • Mission and Goals
    • Who We Are >
      • Board of Directors
      • National Team
      • Local Chapters
      • Advisory Board
      • Coalition Partners
    • Annual Report
    • Bylaws
    • SSL News >
      • Press Releases
      • Newsletters
      • Blog
  • Learn More
    • School Start Times >
      • Why Change?
      • Wake Up Calls (Fast Facts)
      • Key Position Statements
      • Success Stories
      • Legislation
      • Myths and Misconceptions
    • Sleep Education >
      • Let's Sleep!
      • Sleep 101 - College
      • Sleep Calculator
      • Workshops and Webinars
    • Legislation
  • Get Involved
    • Join our Mailing List
    • Contact Us
    • Donate
    • National Conference 2024
    • Find a Local Chapter
    • Sign our Petition
  • Get Resources
    • Bookstore
    • Flyers, Posters, Videos, etc.
    • Implementation Help
    • Reference and Resource List