Increasingly, teachers are expressing their growing concern about problem behaviors many children display in their classrooms. This technical guide offers Head Start staff a process for reflecting on their own practice, assessing difficult situations, and designing interventions for problem behaviors through joint problem solving. The guide is written for Head Start teaching teams and their immediate supervisors; it will also be useful to family service workers, home visitors, managers, and other Head Start staff, as well as consultants. The guide contains the following sections: (1) "Module 1: Laying the Groundwork" helps participants identify ways in which their own perceptions and experiences influence how they interact with children with challenging behaviors; (2) "Module 2: Practically Speaking" helps participants develop a system for collecting data and then using it to develop strategies that capitalize on children's strengths and needs; (3) "Module 3: Building a Supportive Environment" helps participants identify when and how to seek appropriate supports within the program and within the community in an effort to fully integrate children with challenging behaviors into their programs; (4) "Continuing Professional Development" offers strategies that supervisors can use to help staff apply new skills and extend their learning; and (5) "Resources" lists print and audiovisual materials and other resources that staff can use to learn more about the key issues presented in the guide. In order to accommodate the needs of different Head Start grantees, each module offers two different delivery strategies: workshop and coaching. (EV)