We examined the self-reported practices of Head Start personnel toward children's problem behavior in order to design an intervention for preschool personnel that was compatible with their needs. This study involved 78 Head Start staff from five programs in the Mid-Atlantic region. Participants were asked to respond to four questions concerning their practices for addressing their students' problem behaviors. We found that survey respondents (a) listed externalizing behaviors as the predominant challenging behavior, (b) identified prevention and replacement methods for addressing problem behavior, (c) indicated that families of children with challenging behavior were involved in intervention planning and implementation, and (d) reported a need for additional training on classroom management and positive behavior support. Participants also were asked to respond to four conflict scenarios that were designed to measure how teachers would handle problem behavior situations. The majority of participants' responses received a medium rating on a scale of low, medium, or high. Implications of these findings for preschool programs were discussed in terms of professional development and improved needs assessment measures. (Contains 1 figure and 3 tables.)