Should School Start Later Study

I believe school should start later, studies have found that as we age from 6-17, our circadian rhythm changes, we are more of a morning person at the younger ages (6-10). We wake up early natural in those ages. From ages 10-14, our bodies naturally get to bed later and wake up later, that's why some schools have switched the start times of high school and elementary school. It's in the best interest for the students that the start times of high school and elementary schools to be switched. Other studies have concluded that overall academic performance increased when the start times have been pushed back a hour. The only real negative is that there is less time in the afternoon for schools to have sports and clubs. The reason I say