Noting that Head Start has become the largest community-based preschool program providing services to children with disabilities, this guide is intended to build the skills of Head Start staff in effectively using the Individualized Education Program (IEP) to accommodate children with disabilities. Following an introductory section, the guide presents three training modules. Each module details expected outcomes, key concepts, background information, learning activities, and next steps. Handouts are included for each module. Module One, "Laying the Groundwork," provides information to help identify characteristics of the IEP and IFSP (Individualized Family Service Plan), including purpose, benefits, and stages in the development process. Module Two, "What Do I Do Now? Understanding and Implementing the IEP," assists in formulating strategies for translating IEP goals and objectives into classroom activities that reflect developmentally appropriate practice and developing a systematic approach for monitoring ongoing process. Module Three, "Working Together," identifies methods for encouraging collaboration and communication between families, Head Start staff, and related service providers. The final sections of the guide provide strategies supervisors can use to help staff apply new skills and extend their learning, and resource lists of print and audiovisual materials. (SD)