1. You can't send the kids home because both parents are probably working. It's more likely the kid becomes lost forever and it becomes a government problem again once that kid is now living an alternative lifestyle that consumes government resources in other ways (crime, homelessness, or health).
2. Because of the realities of (1) everyone else is now forced to asked why the kid is no longer in school and becomes a failure of the teacher that the kid is not in school. The teacher must now deal with disgruntled parents and administrators for not enduring the emotional abuse and disruption a neglected child causes while also dealing with 20 other students.
I think a lot of problems with child education and just be traced back to economic realities of many parents today. Even if you are relatively well off having your kid kicked out of school isn't financially feasible for a lot of families. Even a disruptive child might be the result of absent parents who must be at work to even afford school lunch.
This is it. Our framework for understanding childhood success is based entirely in “school quality”. If a child enters adulthood with a criminal record, without job skills, or without prospects for higher education, it is always blamed on either the parents or the school system. The only remedies anyone can imagine is throwing money at the school system or setting up charter schools, so when that doesn’t work, you’re left guessing.
But none of this addresses poverty! I am convinced that if children can go to sleep with food in their belly, stable housing, and proper healthcare, they’re much more likely to have good outcomes.
I don't have the numbers in front of me, but I suspect there are plenty of measures by which other countries achieve better educational outcomes with lower educational spending, in which case I'd be willing to bet that they are simply spending more in "social programs" (broadly speaking) than the United States.
You are speaking a Catholic school here. But there are a lot of other schools in 20-mile radius of my home in Silicon Valley where my wife worked.
1. Big city district with “no child left behind” policy, very stupidly executed. Never again, no matter how high the salary is.
2. A charter school chain - a commercial exercise- that has no money planned on disciplinary problems: no staff, no rooms to deal with reports and detentions. Dick drawing, chair humping - “it’s your professional responsibility to control the classroom”.
3. The Catholic school: “thank you doctor N for joining our school” - from kids! When she got all 25 answers on the first assignment- she cried. She was forced to leave the school because you can’t get California credentials in a State university in a program paid by me, not the state - while working in a Catholic school, teaching exactly the same science course.
But there is no need to brutal measures like expelling. There is say option
4. A public school in an ethnic minority suburb. Three reports - and a conference with the teacher and administrator, who is absolutely on the teacher’s side but wants to know how to improve the situation. And that actually helps - these badly behaving kids are not necessarily cruel. “No child left behind” too, but executed properly.
Teachers are left to deal with the impossible burden of raising 30+ kids and fail.
So a teacher has a choice: to be a saint (and do miracles), to be the police (with hands tied though), or to be a victim. Sadly, many end up with the third option :(