Family-school partnerships are crucial for promoting positive outcomes and serving as a protective factor for children at-risk for poor school outcomes (Christenson & Sheridan, 2001). This may be particularly important for autistic children, who are at increased developmental risk (Garbacz et al., 2016). However, little research has examined variables related to dimensions of these partnerships for parents and teachers of autistic children. The present study examined family socioeconomic resources in relation to two dimensions of family-school partnerships (relationship quality and family involvement) among parents of autistic children, as well as dyadic perceptions of relationship quality among parents and teachers of autistic children. Data were collected across two time points (Time 1 N = 68 parents, child ages = 5-11; Time 2 parent-teacher dyad N = 22, child ages = 7-13). Results suggest that: (1) higher appraisal of financial resources was associated with higher parent-reported family involvement after controlling for child autism spectrum disorder (ASD) characteristics; and (2) higher parent-reported relationship quality and family involvement at one time were significantly associated with positive independent (parent and teacher) and congruent ratings of parent-teacher relationship quality 2 years later. Study limitations, future directions, and practical implications are discussed.