A new study says that high schools switching to later
start times have seen an improvement in student grades
and overall student health.
The study released Wednesday by the University of
Minnesota examined data from more than 9,000 students
at eight high schools in Minnesota, Colorado and Wyoming.
It found that later start times boosted attendance,
standardized test scores and academic performance
in math, English, science and social studies.
It also found that Jackson Hole High School in Wyoming
saw a 70 percent drop in the number of car crashes
involving teen drivers when it switched to a later