Public schools are heavily funded by property taxes. So schools in upper middle class and above areas are (usually) pretty great while schools and low income areas are (usually) pretty not great.
The classes I learned the most at in university consisted of a professor, a blackboard, and chalk.
The funding (and quality!) of the professor seems more relevant, whether they're teaching on a blackboard, a fancy networked glowing screen, or just declaiming from atop a rock.
Not in California.
https://www.heritage.org/education/report/the-myth-racial-di...
on average, both Black and Latinx total per pupil expenditures exceed White total per pupil expenditures by $229.53 and $126.15, respectively [total per-pupil funding is around $14k, so the differences are negligible] - https://journals.sagepub.com/doi/full/10.1177/23328584198724...
And the US spends more than average per pupil - more than Belgium, the Netherlands, Sweden, Germany, Finland, and Japan: https://nces.ed.gov/programs/coe/indicator/cmd
Three adjacent school districts, in descending order of household income and grade-level performance: Piedmont (90% at-grade-level), Berkeley (67%), Oakland (33%).
Since 1970, inflation adjusted public school spending has more than doubled. Over the same period, achievement of students at the end of high school has stagnated according to the Department of Education’s own long term National Assessment of Educational Progress [I encourage you to visit the website for the illuminating graph of inflation adjusted per-pupil spending and test scores vs. time] - https://mjperry.blogspot.com/2009/09/education-spending-doub...