Functional behavioral assessment (FBA) is an empirically supported intervention associated with decreasing problem behavior and increasing appropriate behavior. To date, few studies have examined multimedia approaches to FBA training. This paper provides the outcomes of a randomized controlled trial across three university sites and evaluates whether preservice teachers can learn the core features of the FBA process through short multimedia vignettes compared to a traditional method (i.e., in-person lecture with PowerPoint). Based on our previous research, we hypothesized that the multimedia group (n = 97) would outperform the traditional method group (n = 102). Results indicated statistically significant differences in FBA knowledge favoring the students who participated in the multimedia condition, F(1, 198) 5 9.61, p = 0.002, d = 0.45. Findings are discussed along with implications for practice and subsequent research.