The quantity and quality of research focused on autism spectrum disorder (ASD) have grown over the past several decades. Ensuring that research findings are accessible and understood by education professionals is essential for improving outcomes for individuals with ASD. In this study, we evaluated education professionals' knowledge about ASD, specifically (a) beliefs about causes of ASD, (b) their familiarity with evidence-based practices (EBPs) and non-EBPs, (c) the likelihood of using or recommending EBPs compared with non-EBPs, and (d) the extent to which source credibility influenced the likelihood of using or recommending different types of practices. Education professionals (N = 62) completed a paper survey. Responses on a modified version of the Illness Perception Questionnaire--Revised (Moss-Morris et al., 2002) were used to evaluate participants' beliefs regarding causal attributes of ASD. Educators were also asked to read texts describing four EBPs and four non-EBPs. The text presentation was based on a 2 × 2 within-subjects factorial design with practice status (EBP or non-EBP) and source credibility (credible or not credible) as the independent variables. After reading each text, participants reported on whether they were (a) familiar with the practice and (b) the extent to which they would use or recommend the practice. Results indicate that school personnel were highly confident that neurobiological factors were a causal attribute of ASD. In addition, respondents were more familiar with, and more likely to recommend or use, EBPs as compared with non-EBPs. Source credibility did not significantly affect participants' likelihood of using or recommending practices.