Is designed for those working with youth involved in multiple systems using the Crossover Youth Practice Model. This supplement is a brief version of A Trauma-Informed Guide for Working with Youth Involved in Multiple Systems developed specifically for staff working with youth who are currently or have been involved in the child welfare, juvenile justice, and other systems. After a brief description of the CYPM, real world examples are provided that highlight five distinct steps of trauma-informed practice with crossover youth.