Bad behavior is a huge issue. The only reason we pay for private school is because our school is allowed to counsel out misbehaved students. Our studious, obedient daughter would never get equal attention from her teachers in a typical public school.
Yes, the public systems are struggling to manage behavior and iphone addicted parents are not helping the situation. Kids with bad behavior deserve equal attention but should not be sucking all the air out of the classroom, which unfortunately is happening all too often. When that happens ideally there are interventions, discipline, social work, IEPs, medical therapy, and alternate placements. Obviously we cannot ignore such kids (largely boys) or they'll be on their way to prison or otherwise an economic drag on society. I worry especially about all the boys I see who are just not getting out with dad, grandpa, or brothers to get some solid lessons and hard knocks on the playground.