Considerable research confirms the relationship between school start times, sleep deprivation, and student performance, truancy, and absenteeism, as well as depression, mood swings and impulse control. Mounting evidence about the biology of adolescent sleep, and about the impact of later start times, shows that starting school early not only undermines academic achievement but endangers health and safety. Reaserch from later starting schools such as Nathan Hale High School corroborate national findings in demonstrating improvements in tardiness, absenteeism and performan



