If I may please add my two cents.
Private schooling tuition in the non-Jewish world by far exceeds the tuition fees asked by heimishe schools. In fact, the costs allocated to a public-school attendee is considerably higher than our tuition costs (I think they allocate $18k per child). Our schools give us a considerable break in tuition as compared to their true expenses per child; even more so in Chassidic-oriented schools.
They schools have historically supplemented their shortage by going out there and asking for individual donations, parties, Melave Malka’s, etc.
Now, with the economy being in shambles, those private donations are reducing, in some cases significantly.