Disparities across race, gender, and class are important targets of descriptive research. But rather than only describe disparities, research would ideally inform interventions to close those gaps. The gap-closing estimand quantifies how much a gap (e.g., incomes by race) would close if we intervened to equalize a treatment (e.g., access to…

Black students remain under enrolled in AP courses compared to White peers, even with intentional outreach. One possible reason for this continued disparity is that Black students may choose not to enroll in AP courses where they are racially isolated. Using the 2017-2018 Civil Rights Data Collection and multilevel modeling, I examine the…