In this article we examine some of the omnipresent yet unacknowledged discourses of social and economic disadvantage and dis/ability within schools in the US. First, we document ways that social class, race, and dis/ability function within schools to further disadvantage and exclude already marginalized students. Next, we show how particular ways of talking about student ability and achievement rarely addresses this important connection. We then illustrate specific ways that race, social class, and dis/ability are elided even within more critical academic discussions. Finally, we argue for a more critical and sustained scholarly engagement that would necessarily entail reaching out margin-to-margin in order to fully understand and interrupt the myriad ways that race, economic disadvantage and dis/ability work to justify exclusion and inequality in schools.