Sleepmore in Seattle: Later school start times are associated with more sleep and better performance in high school students

Gideon P. Dunster, Luciano de la Iglesia, Miriam Ben-Hamo, Claire Nave, Jason G. Fleischer, Satchidananda Panda, Horacio O. de la Iglesia
2018 Science Advances  
Most teenagers are chronically sleep deprived. One strategy proposed to lengthen adolescent sleep is to delay secondary school start times. This would allow students to wake up later without shifting their bedtime, which is biologically determined by the circadian clock, resulting in a net increase in sleep. So far, there is no objective quantitative data showing that a single intervention such as delaying the school start time significantly increases daily sleep. The Seattle School District
more » ... ayed the secondary school start time by nearly an hour. We carried out a pre-/post-research study and show that there was an increase in the daily median sleep duration of 34 min, associated with a 4.5% increase in the median grades of the students and an improvement in attendance.
doi:10.1126/sciadv.aau6200 fatcat:73fraa43lnfplioeacs4xkq634