and the story is the same. There are several reasons...some of which are probably true and some of which are just grumblings. First, and probably foremost is teachers salaries. When nuns were the majority of teachers, that overhead was very low. Very few nuns are left to teach school. Lay teachers in parochial schools are paid far, far less than teachers in public schools and their is pressure to correct this. These two cost items are true. Here come some grumblings.
Catholic parishes (and some other church schools) traditionally had their own schools in growing America long before public systems existed. Being a member of the church brought with it the responsibility to fund the school and the privilege to place one's children in it for little or no tuition charge. As public school systems developed and were tax supported, fewer new churches built schools. The relative numbers of kids in church vs public education systems swapped sides. Today, church schools still need to comply with state education standards and their teachers need proper credentials. Low pay for parochial school teachers who invest the same time in their education is a problem. Fewer are willing to work for 1/2 the potential pay. As well, school administration, that was handled by the local priest, has been outsourced to diocesan level. It's more costly. Parishes seem to be adopting the notion that, if you want a catholic education for your kids, you have to pay for it. The parish collection isn't enough and other fund raising efforts to supplement tuition have been challenged. As well, the Catholic church in the US has seen a serious drain on it's resources because of a few of it's bad priests. I won't get into that but it's very real and the money needs to come from somewhere.
My personal prediction is that this trend will continue. Only the rich parishes (and these are few) will be able to build, maintain and staff their own schools. It's not the rich ones that have, traditionally, produced priests and nuns...but the poor ones. As these numbers dwindle, the problem just cascades.
Oh well, gettin' on a roll here. That's what I can offer as explanation. Some real, and some myth....maybe. 