And it's exactly this liberal mentality that keeps you from understanding your own question. Your mentality is your own roadblock to your thought process.You should pay taxes for their education so their children can contribute to the economy's growth when they become adults.
That, plus training them for jobs may be the only way to create the jobs.
Oh, and no city has a constitutional right to keep out anyone, so tough luck, you're wasting your money.
You seem really wet behind the ears. I don't think anyone in DG who pays 80% of their property taxes to the school district really cares about educating Government freeloaders. If you gave them the choice of getting a great education or selling drugs for money, they'd choose a life of crime.
If we all thought the world was puppies and kittens, we'd get eaten alive when the wolves appeared. The world isn't unicorns and rainbows...that's fantasy stuff.