This guide is intended for use in training Head Start staff working with families to plan and implement the program's curriculum through an individualized child development and education approach. The guide focuses specifically on enhancing staff skills in carrying out the four steps in the individualizing process: screening; evaluation; planning; and ongoing assessment. Following an introductory section, the guide presents four training modules. Each module details expected outcomes, key concepts, background information, learning activities, and next steps. Handouts are included for each module. Module One, "Learning about Each Child--The First Step in Individualizing," provides an overview of the individualizing process. Module Two, "Creating Essential Partnerships--Families and Staff Working Together," allows participants to establish partnerships with families so they can share information about each child. Module Three, "Individualizing Every Day--An Ongoing Dynamic Process," encourages participants to respond to each child's unique characteristics by individualizing all aspects of the curriculum. Module four, "Responding to Children's Progress--The Ongoing Process Continues," builds participants' ability to conduct ongoing assessment. The final sections of the guide contain continuing professional development and resource lists. Five appendices address individualizing, culturally competent practices, screening instruments, characteristics of strong partnerships, and assessment in Head Start. (SD)