(AP) - A report by the state Education Department recommends New Jersey teenagers start school later, but the times should be set by local districts to avoid a logistical nightmare.

The study ordered by Gov. Chris Christie in 2015 revealed 86 percent of middle and high schools start before 8:30 a.m., with 8 a.m. being the average. However, the American Academy of Pediatrics says later start times are more in line with teens' sleep patterns.

The Centers for Disease Control and Prevention says lack of sleep leads to health risks such as being overweight, using drugs and poor grades.

School officials say later start times create conflicts with after-school activities such as athletics and hurt students with jobs.

The report states most school districts are not considering later start times.