When I wrote my comment, my thoughts were around higher education though - not primary, middle and high schools. The ones like college education and higher education where people pay through the roof and rack up debts that stay with them for decades.
So you most certainly can't fund your education at the same institution working at a gas station now with only 5k student loans.
We lived off campus 4 ppl in a 2 bed ( ~100/head). My total living expense was ~350/month. My parents had recently immigrated, so i was totally ok with not having a "college experience" or actually knew what exactly it was. I was able to find another job on campus as an attendent at computer lab which game plenty of time to relax and do coursework.
I agree that now it might not be possible. But its doable if you get grants( which most of my classmates did) and are ok slumming it out though college.
But most of these schools remain overwhelmingly white institutions, both because of their founding ethos and because tuition fees are a barrier to entry. In communities where many or most white students are sent to these private schools, the percentages of African-American students in tuition-free public schools are correspondingly elevated. For example, in Clarksdale, Mississippi, as of 2010, 92% of the students at Lee Academy were white, while 92% of the students at Clarksdale High School were black.[4] The effects of this de facto racial segregation are compounded by the unequal quality of education produced in communities where whites served by former segregation academies seek to minimize tax levies for public schools.
https://en.wikipedia.org/wiki/Segregation_academy
The evangelical movement was central to the formation, promotion, and organisation of the segregation academy movement.
The problem is not the amount being spent.
https://www.theguardian.com/us-news/2018/sep/07/us-education...
It may not be much good, but that's a different question.