In my opinion this article, and the related report[0] bury the lede, which is that segregation is the bigger problem than funding. I only read the executive summary of the report but the first 3 paragraphs address funding inequalities, and the last addresses segregation. This American Life did an excellent episode on this in 2015[1] that reflected my experience teaching in the public schools in Washington DC. DCPS has a high per-pupil funding[2] but not correspondingly high outcomes. And part of that is because DC, like most minority communities, is old with infrastructure suffering from decades of deferred maintenance. But I also worked in a minority school in a segregated suburban district[3], that was not old, did not have deferred maintenance, and was working with essentially the same resources as the majority white schools across the county; and students in that school were remarkably similar to those I worked with in DC.
[0] http://www.usccr.gov/pubs/2018-01-10-Education-Inequity.pdf [1] https://www.thisamericanlife.org/562/the-problem-we-all-live... [2] https://www.census.gov/newsroom/releases/archives/finance_in... [3] http://www.nbc12.com/story/28265605/ucla-study-singles-out-h...