There is a dearth of empirical research investigating public awareness or perceptions of the impact of collateral consequences of juvenile justice system involvement on youths' lives. The current study recruited 555 Pennsylvania residents through Amazon Mechanical Turk to participate in a brief, educational intervention on collateral consequences of system involvement. Participants read a short vignette about a hypothetical youth who was adjudicated delinquent in Pennsylvania, answered 20 knowledge-based questions, and provided pre-and postintervention ratings of the impact the delinquency finding would have on the youth's life in the short term and in the long term. Results of linear mixed model analysis revealed significant fixed effects of both phase b = .62, p < .001, 95% CI [.47, .78] and timing (before the youth turns age 18 and after the youth turns age 18), b = -.98, p < .001, 95% CI [-1.18, -.78], on impact ratings (i.e., how big an impact a juvenile adjudication will have on the youth's life). Participants provided incorrect responses to approximately half of collateral consequences, indicating a gap in knowledge. Findings from the