On one hand, the challenges you mention with Charter Schools. On another hand, leaving all of the kids together in a cluster with disruptive students who create issues related to safety and distracted classroom environments seems to unfairly cost the kids who are willing to do the actual work. Then on yet another hand, you have politicians who claim that these aforementioned "disruptive" students are being unfairly targeted due to racial/social factors and start pressuring (or incentivizing) schools to stop suspending or expelling them.