Seattle high schools find later start time improves academic performance

SEATTLE — High school students are getting more sleep in Seattle, say scientists studying later school start times.Teenagers wore activity monitors to find out whether a later start to the school day would help them get more sleep. It did, adding 34 minutes of slumber a night. They also reported less daytime sleepiness, and grades improved.The Seattle School District changed from a 7:50 a.m. start time to 8:45 a.m. in the fall of 2016 for high schools and most middle schools, joining dozen