Without having to spend 80% of its time on the gang-bangers, thugs and other assorted riff-raff that disrupt class at best and commit crimes at worst the schools could actually focus on learning. They also would not have to waste time teaching ABCs to high-schoolers.
Newsmedia talk about how our schools are ranked 38th in the world compared to other nations but fail to realize that we try to educate everyone. In many places of the globe like China if you act up too much in school they don't just expel you, they arrest you and put you in jail. Not so here.This is a simple problem to fix and could be done tomorrow, IF politicians and the public actually believed that schools should be a place for learning.