More sleep would decrease health problems and allow for more concentration in school. A couple of studies have shown that school should start no earlier than 8:30. Starting any earlier than this can shorten a student's sleep time, resulting in lower health, academic performance, and safety.

Why schools should have a later start?

Later school start times support the biological needs of adolescents; they increase the amount of sleep adolescents get. Other benefits of later start times include: Improved attendance at school. Decreased tardiness.

Do schools that start later do better?

When Schools Start Later, Grades, Attendance, and Sleep Improve. ... In addition to more sleep, the study found that later wake-up times were associated with grades that were 4.5 percent higher. “This was a huge increase,” says Dr. de la Iglesia.