I strongly disagree with the implication that someone who is poor should be kicked out of the city if he can’t afford tuition. Since when is it a midda of Yidden to throw people out of town if he is poor?? Even if there is cheaper places to live.
I agree with this statement. We don’t throw anyone out of the city.
However, the school is not Mechuyav to take anyone who does not pay the tuition they request from them.
B”H, we are Rachmanim Benei Rachmanim and those with more are willing to support those with less. When they are not, those with less will have to find other methods of being Mechanech their children.