This study reports on a randomized controlled pilot intervention study examining the effectiveness and feasibility of a low-intensity (i.e. three sessions), low-cost, parent advocacy intervention. The intervention study employed community-partnered research methods and targeted a low-income community of mostly Latinx, immigrant-origin parents of children with autism spectrum disorder. The study was designed to test a parent-to-parent advocacy mentorship program in order to increase parent's special education advocacy knowledge and empowerment. The educational intervention was delivered in Spanish to Spanish-speaking parents. Results indicated significantly increased in parent's knowledge in the immediate intervention group, but this knowledge did not lead to greater sense of parent's empowerment. Increases in knowledge about special education rights of their children are the first step toward advocating for services for their children. While parents from low-income, racial/ethnic minority backgrounds, particularly Latinx parents, can significantly increase their advocacy skills with a low-intensity, low-cost program, they may need more support in changing their self-perceptions of empowerment and advocacy. [This article was written with Fiesta Educativa, Inc.]