Later start time for teens improves grades, mood, and safety

Kyla L. Wahlstrom

Research output: Contribution to journalReview articlepeer-review

6 Scopus citations


A recent study by the University of Minnesota looked at eight high schools across the U.S. that chose later start times, from 8:00 a.m. to 8:55 a.m. The study found significant decreases in absences and tardiness as well as greater academic benefits for schools with the latest start times. Among the 9,395 students in the study, those who slept eight or more hours each night were less likely to report symptoms of depression and fall asleep in class. Moreover, after the change to a later start time, the number of car crashes in the districts studied decreased by 13%. Included are recommendations for schools and districts considering changing their high school start times.

Original languageEnglish (US)
Pages (from-to)8-14
Number of pages7
JournalPhi Delta Kappan
Issue number4
StatePublished - Dec 1 2016

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© 2016, © 2016 by Phi Delta Kappa International.


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