school start times

Many parents have pushed for a later start to the school day for teenagers, with limited success. But parents just got a boost from the nation's pediatricians, who say that making middle and high schoolers start classes before 8:30 a.m. threatens children's' health, safety and academic performance.

Cristina Sevin knows the drill. Her 15-year-old son Isaac's first alarm goes off at 6:05 a.m.

When he sleeps right through it, Mom starts the nudging. But she also has to wake up 16-year-old Lily. She flips on the bedroom lights. "Lily, you gotta get up!"

They have to be out the door before 6:35 a.m. in their Annapolis, Md., neighborhood in order to catch the bus for a 7:17 school start. "I wish I didn't have to be awake right now," says Lily.