The NAACP Legal Defense and Educational Fund, Inc. (LDF) represents a class of Black school children in St. John the Baptist Parish Public Schools in a decades-old federal school desegregation case. St. John is one of the most highly industrialized parishes in Louisiana and has some of the highest rates of toxic substance releases and air emission events in the state. St. John consistently experiences high incidence rates of asthma, compared to other parishes in Louisiana—asthma is known to be triggered by air pollution. The parish’s school district contains several industrial sites, including Denka Performance Elastomer LLC (Denka) and Air Products and Chemicals Manufacturing Facility, that expose students to toxic industrial emissions that can trigger a number of illnesses and adverse health events.