You could donate a dollar a week, if that's all your means allowed, have ten children, and send them to Catholic school for free (or at least that's the way it was in my diocese, mid-1970s). Non-Catholic students were allowed to attend for minimal cost, IIRC it was $300 per year. Pocket change.
Unfortunately, by the 1970's, the schools where I grew up were already totally taken over by the Novus Ordo, ecuмenical, effeminate, peace and love, commie false religion.
Also, factoring in inflation, that $300 back in 1970, could today buy between $6000 to as much as $15,000. I think Catholic schools today charge about $6000 to $8,000, no? So the price is still the same as in the 1970's, its just that people make less money than in the 1970's. And of course to those that remember when you could buy school for $300, $6000 sounds like a rip-off.