“They get “free” education and meals and one day forget to go back to Mexico.”
Generally speaking they pay tuition, just like any other out-of-district children. They are also not eligible for “free lunch” or other benefits.
It was a substantial money-maker for the district where I was on the school board. They were also generally some of the brighter kids — parents doctors and lawyers and whatnot in Mexico.
Not in our district, but as I said most are citizens.