High schools are notorious among their students for starting classes early in the morning, which contributes to the adolescent sleep issue.
Students who do not get enough sleep each night are less attentive, often resorting to drinking large amounts of caffeine or falling asleep in their classes.
A lack of rest (which is worsened by the early class start times) results in poor academic performance. However, if classes were delayed and students arrived to school well-rested, students would be able to focus better, and grades would improve.
Because of the critical importance of sleep and its positive effect on adolescents' academic performances, schools should seek to maximize the rest students get each night by delaying class start times.