Abstract
This study examines the availability and outcomes of Advanced Placement (AP) courses in secondary schools in Georgia (USA) and South Carolina (USA), focusing on how school locale (rurality) and demographic composition influence AP availability and student achievement. The authors analyzed population-level school data from the 2021-22 academic year using a two-step quantitative approach. A zero-inflated negative binomial regression model (ZINB) was employed to assess AP course participation and AP exam performance while addressing overdispersion and excess zeros in the data. Key predictors included school locale (rural versus nonrural), state (Georgia versus South Carolina), and minoritized-majority status. This study finds that rural schools and those where minoritized students make up the majority (i.e., fewer than 50% White students) are significantly less likely to offer AP courses or have any students participate in AP exams. Moreover, these schools had a significantly lower success rate; for example, rural schools were 59% less likely to have students with scores above three. The findings indicate that gaps in access to advanced curriculum may exacerbate existing college and career readiness disparities. Moreover, this study confirms that previous research using sampled datasets underestimates the disparity of AP access.