I'm in northeast NJ, we paid $3375 as a parishioner for one child (we will eventually have three in the school) but then must pay donate a min if $10 per week to maintain "parishioner" status. Afterall is said and done, the difference between a parishioner's tuition vs non parishioner's tuition comes out to about $200 a year. That said, we are told be the Diocese it costs $4300 to educate each child. We have three sponsoring Churches, the larger one in which is located off site kicks in $8000 monthly to the school. The on site Church, is rather large as well but pays for the utilities of the school and maintainance. The third church, is smaller and I don't imagine puts out as much, but financially helps the school in some way, nontheless. We would have to close if it weren't for the combined efforts of our churchs, unfortunately.
My urban Philadelphia parish pays over $1 million annually towards the running of its 950 child school - that's 3/4 of the parish budget -, which school educates around 2/3 of the children in the neighborhood and almost all of those belonging to the parish.
$8000 per month contribution is a joke. That isn't even $100,000 per year.