blurb in question: To receive special services under Section 504, however, students must display a "physical or mental impairment that substantially limits one or more major life activities" but don't need an official diagnosis. Schools don't receive any funding for Section 504, so they must draw from their own resources to help students. This helps explain why schools with high populations of minority students are less likely to place students into special education services, according to the new research.
In addition, they study says many black families are "skeptical of medical and mental health research" because of the Tuskegee experiment, which involved researchers in the mid-20th century misleading and mistreating black men involved in a study about syphilis.
Disadvantaged schools also tend to have more one-size-fits-all approaches to discipline, leading to high rates of suspensions and expulsions.