When they struggle in North Dallas, where do they go? Send them South and West!
If I was a vain teacher, I would say it's because I'm such a good teacher that they trust me to make a difference where everyone else has failed, but I know better. Those students were sent to me because their school didn't want to risk their scores on difficult kids. Their school actually enforces the rules and didn't want to keep students that couldn't follow them. Their school said enough is enough and sent them to a campus that would take them.
Why does my campus take problem kids from what seems like all over the country? Maybe the extra money per child is attractive to our administrators? That could be it. With so many truancy cases from our current students not showing up, I guess every child counts?
Regardless of the reasons, schools shouldn't be used as dumping grounds for what the rest of the district has decided is trash. If you have students that are challenging, deal with them at your campus instead of giving up and sending them somewhere already struggling, thus making it worse. If the student is truly too difficult to be at your school, perhaps they are too difficult to be in school period. You are only hurting already hurting schools and communities.