Overall, the discussions reflect strong support for later start times, emphasizing scientific evidence and real-world benefits such as reduced health issues and improved learning outcomes. The tone is assertive and optimistic, with phrases like 'demonstrates this is right!' and references to policy changes in California, illustrating the perceived importance and potential impact of the research findings.
AgreementStrong agreement
Most discussions strongly support the idea of later school start times, citing substantial evidence and scientific studies, with phrases like 'demonstrates this is right!' and 'the science and pioneers' highlighting consensus.
InterestHigh interest
Many posts delve into detailed scientific research, mentioning specific studies, improvements in health and academic success, and referencing authoritative sources like 'Body Clocks' and CDC reports, indicating high engagement and curiosity.
EngagementHigh engagement
Discussions include references to international examples, legislative efforts, and detailed summaries of research findings, showing active participation and a deeper exploration of the topic.
ImpactHigh impact
The numerous references to significant benefits such as a 50% reduction in student illness and increased academic performance demonstrate that these discussions highlight meaningful, real-world impacts on student health and education.
Abstract in brief
A study conducted over four years in an English high school found that delaying school start times from 8:50 am to 10:00 am significantly reduced student illness by over 50% and improved academic progress, with these benefits reversing when start times returned to 8:50 am.
The research showed that the later start time was associated with a 12% increase in students performing well in national exams, equating to about 20% of the national benchmark, indicating better academic outcomes.
The findings suggest that starting school at or after 10:00 am can effectively address adolescents' sleep needs, reduce health issues, and promote better academic performance, with minimal downsides.]
Bilimsel çalışmaları yapılmış bir konudan bahsettim. Okul saatlerinin başarı oranındaki etkileri farklı yaş gruplarında araştırılmıştır. Kaynakları buraya bırakıyorum.
https://t.co/w8PYCPhAP8
https://t.co/GhIITg9GiX
https://t.co/6E3NL70Pb3
Birçok çalışma, daha iyi öğrenci
Oct 24, 2025 · 47 likes · 26 shares · 33,373 followersView post →
DK
Dr Paul Kelley
@DrPaulKelley · X
Once again, California looks to become the first state to change teen start times, and improve health and learning.
Read https://t.co/prONZVEQVH research that shows better health and learning can be huge with later starts
Read Body Clocks (by @DrPaulKelley and @SianGriffiths6). https://t.co/hvnuJsVC4W
The research evidence is very clear: these later school starts will increase students' hours of sleep and improve their health. In our 4-year study illness dropped by 50% - an amazing change https://t.co/prONZVEQVH https://t.co/SkkUQfgjNK
This is a vital step to improve students' health. The main impacts will be a fall in student illnesses and a rise in student achievement. Our latest research is only one of many, many demonstrations of the benefits https://t.co/prONZVEQVH and we site many others. https://t.co/rtEP7I3Euz
This is happening now with teenagers denied they sleep by schools. However, times are a-changing. California. Texas. Other US schools. UK, and the 10am pioneers.
More evidence? https://t.co/prONZVEQVH
Full argument? Body Clocks (Kelley and Griffiths) on Amazon (Kindle too) https://t.co/lmHoeQbR8g
Caffeine enhances memory performance, especially during nonoptimal times of day, and delaying school start times to 10:00 a.m. improves student health and academic success, addressing sleep needs and reducing health…
This video discusses how pubertal changes affect sleep regulation in adolescents, leading to delayed sleep phases that are worsened by early school start times and evening light exposure, impacting health and academic…
Bilimsel çalışmaları yapılmış bir konudan bahsettim. Okul saatlerinin başarı oranındaki etkileri farklı yaş gruplarında araştırılmıştır. Kaynakları buraya bırakıyorum.
https://t.co/w8PYCPhAP8
https://t.co/GhIITg9GiX
https://t.co/6E3NL70Pb3
Birçok çalışma, daha iyi öğrenci
@DonaldClark @DavidPerring @DebbieOMoore
Best times for health and study https://t.co/prONZVEQVH
University studies: Are there best times? https://t.co/2vShJWLcwS
Our predictions of the best for specific later times
https://t.co/BIeqTMjtA6
When and how we teach should change.
@StacySimera The best data from us is https://t.co/prONZVEQVH where 13-16 year olds are healthier with 10am; 4yr study
recommendation for 11am-12 am best evidence is https://t.co/2vShJWLcwS for 18-19 field trial, university
The original estimates were in https://t.co/BIeqTMjtA6
RT @DrPaulKelley: Those who knew it was right to change, made plans. The scientists who knew we must change, made a stronger case https://t…
Oct 14, 2019 · 1 share · 2,090 followersView post →
DK
Dr Paul Kelley
@DrPaulKelley · X
Those who knew it was right to change, made plans. The scientists who knew we must change, made a stronger case https://t.co/prONZVEQVH and Body Clocks: The biology of time for sleep, education and work (see Amazon!) https://t.co/RsUG9peYB0
Oct 14, 2019 · 2 likes · 1 share · 710 followersView post →
JU
John Catt USA
@JohncattUSA · X
RT @DrPaulKelley: This is one of #SB328 strengths- there will be schools who have very good reasons for later hours. Of course, we've reco…
This is one of #SB328 strengths- there will be schools who have very good reasons for later hours. Of course, we've recommended 10am and this was the time the UK Parliament discussed. The outcomes? https://t.co/prONZVEQVH https://t.co/DPJOZ3Q0R5
And here's an example of what can happen if you look for later starting times that have been proved to benefit health https://t.co/prONZVEQVH https://t.co/wPzD9Czngk
This is a vital step to improve students' health. The main impacts will be a fall in student illnesses and a rise in student achievement. Our latest research is only one of many, many demonstrations of the benefits https://t.co/prONZVEQVH and we site many others. https://t.co/rtEP7I3Euz
The research evidence is very clear: these later school starts will increase students' hours of sleep and improve their health. In our 4-year study illness dropped by 50% - an amazing change https://t.co/prONZVEQVH https://t.co/SkkUQfgjNK
I'll be there to talk about what is the best time for students to learn. And the evidence from research demonstrating what times work best https://t.co/prONZVEQVH https://t.co/KRd5TPXzgD
RT @DrPaulKelley: It is ironic that education changes little over time when it sticks to what is known, and thrives when rigorous science i…
May 10, 2019 · 1 share · 3,112 followersView post →
DK
Dr Paul Kelley
@DrPaulKelley · X
It is ironic that education changes little over time when it sticks to what is known, and thrives when rigorous science is applied ( such as https://t.co/prONZVEQVH for example. U.S. education needs later school starting times for teenagers for 30 years- and hasn't changed yet. https://t.co/6vFaRNErAs
May 10, 2019 · 1 like · 1 share · 710 followersView post →
S
Sleep_101
@Sleep101USA · X
RT @DrPaulKelley: Later school starts for teenagers can provide a better temporal environment. Current practices shorten sleep of many teen…
Later school starts for teenagers can provide a better temporal environment. Current practices shorten sleep of many teenagers. See CDC and US studies, https://t.co/prONZVEQVH and other studies. https://t.co/0P94ybsRaS
May 9, 2019 · 1 like · 1 share · 710 followersView post →
H
HardassHelen
@Hardasshelen · X
RT @DrPaulKelley: This is happening now with teenagers denied they sleep by schools. However, times are a-changing. California. Texas. Ot…
This is happening now with teenagers denied they sleep by schools. However, times are a-changing. California. Texas. Other US schools. UK, and the 10am pioneers.
More evidence? https://t.co/prONZVEQVH
Full argument? Body Clocks (Kelley and Griffiths) on Amazon (Kindle too) https://t.co/lmHoeQbR8g
Fantastic news. The evidence for later starts is strong in England too:
Read https://t.co/prONZVEQVH … research that shows health (50% less absence) and learning soars with 10am starts
Read Body Clocks (by @DrPaulKelley and @SianGriffiths6). The science and pioneers https://t.co/bFccO0Ymyi
Delighted California is leading the US in improving health, safety and education of students. Outside the US?
Read https://t.co/prONZVEQVH … UK research shows better health and learning soars with 10am later starts
Read Body Clocks (by @DrPaulKelley and @SianGriffiths6). https://t.co/MVw7WROzNF
Teenagers can have improved health, learning and fewer accidents- and all for free!! Just move school times to later- much later works even better!
Read https://t.co/prONZVEQVH better health and learning
Read Body Clocks by @DrPaulKelley and @SianGriffiths6 . https://t.co/COobxfy8c8
Once again, California looks to become the first state to change teen start times, and improve health and learning.
Read https://t.co/prONZVEQVH research that shows better health and learning can be huge with later starts
Read Body Clocks (by @DrPaulKelley and @SianGriffiths6). https://t.co/hvnuJsVC4W
The key is health and teenagers' illnesses falling by 50%- our duty of care overrides making changes in minor importance. https://t.co/prONZVEQVH https://t.co/hA9BfDj1Do
Teenagers need sleep! Listen to students, and read the science. https://t.co/prONZVEQVH For the full science see Body Clocks: The biology of time for sleep, education and work https://t.co/ufGEzCJy26
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