<p>Compared to the general population, mothers of individuals with disabilities experience significantly greater stress. Some of this stress can be attributed to parent (e.g., socioeconomic status) and child (e.g., maladaptive behavior) characteristics. Among mothers of children with Individualized Education Programs (IEPs), some stress may be related to their advocacy and partnerships with educators. Yet, little is known about stress among mothers of children with Sect. 504 plans. The lack of research is problematic given that more than 1&#xa0;million students have Sect.&#xa0;504 plans. The purpose of this study was to identify the correlates of stress among mothers of children with Sect. 504 plans. Responding to an online, national survery, 123 mothers of children with Sect. 504 plans completed measures related to their background, their child, their advocacy behaviors, and their stress. Compared to the general population, participants demonstrated significantly greater stress. Specifically, there was a significant, negative correlation between parent empowerment and maternal stress. In addition, greater systemic advocacy related to increased maternal stress. Further, mothers with (versus without) disabilities reported significantly greater stress. Mothers of children with physical disabilities (versus other types of disabilities) reported significantly greater maternal stress. Implications for research and practice are discussed.</p>