You realize that history existed even before the 50’s, right?

Catholic education in America was shaped in the later 1800’s by the Know-Nothing flavored protestants that largely dominated the public school system at the time. Catholics as a demographic at the time were at a far lower socio-economic status in America than they are today. And yet then and up through the 60’s, it was a general rule that nobody would be turned away from a catholic education for lack of money. It is only since the early 70’s and on that catholic schools have had to be increasingly ruthless with finances to survive.
I’m not sure you’re even really trying. Did you really think that I was trying to say that mowing lawns was equivalent monetarily or are you just trying to score points in any manner possible. The point is that in that era the parish as a whole supported the idea of catholic education and contributed what they could to achieve it. That was enough to offset those who had less to contribute. Especially when we had an invincible army of religious sisters backing the effort.
There once was a problem where candidates for priesthood and religious life needed to seriously discern if they had a real vocation or if they were trying to live up to parental expectations. Today the exact opposite is true: parents actively try to STOP their children from giving themselves up to Christ in consecrated service. What changed if not an attitude of self gift to one of selfishness?