There has been an explosion of research on racial disproportionality in special education. Some recent research shifts the focus from the role of student characteristics alone to inquire whether school context moderates findings (e.g., is a Black student less likely than a White student to receive special education services as the proportion of a school's Black students increases?). We significantly extend this emerging literature using eight years of elementary student- and school-level data from NYC public schools, examining more school contextual moderators, expanding racial categories, and distinguishing between cross-sectional and over-time differences. We find many more moderators than previous research has identified and these school context factors appear to be particularly salient for the classification of Black students.