Some may say the centerpiece and raison d'être for the article by Chester Finn is this 37-page document by Department of Education Office of Civil Rights dated October 1, 2014.

The document and a companion document also linked in the article reference disproportion (disproportionate, disproportionately, and disproportionalities) regarding GATE programs, honors and AP courses, and extracurriculars known to benefit college-bound students. A footnote states:
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* ... students in special education may be served by more teachers and support staff than other students, and therefore districts may spend more on those students, but that does not mean that those students are inequitably receiving a disproportionate share of resources.