we learn things that don't apply to life (sciences, math past algebra) when we could be learning about philosophy or something that will benefit those of us who are not going to be scientists. If you drop out, you have to wait until one year after your class graduates before you can get your GED, so in the mean time, you cant get a job, or do much of anything. So wouldnt this increse crime rate?
School also is not designed for kids, I believe it would be more beneificial if it started later in the day, we took out all study halls, free periods, and lunches, and got out at the same time. Then everyone would have more energy to learn, more time to complete assignments, more time to be social (vital to one's health) and everyone is happier.
If we can change school to be so much more efficient, then why don't we?