Our nation's economy and global competitiveness depend on an educated, skilled workforce that can quickly adapt to changes in technology and business processes. Adult educators understand that adult learners need opportunities to obtain workplace and career management skills through work-based learning experiences that prepare them for the complex future they face. The federal Workforce Innovation and Opportunity Act (WIOA) has changed the landscape of adult education by focusing the field on workforce development outcomes and programming that support the integration of education and training and career pathways. Integrated Education and Training (IET) is an educational practice grounded in adult learning theory. IET programs help adults who lack basic skills, relevant occupational skills, and essential workplace skills to be prepared to enter in-demand careers. The Office of Career, Technical, and Adult Education (OCTAE) has developed this IET Toolkit to assist state and local adult education staff to plan, design, implement, and evaluate effective IET programs that are responsive to state and local labor market demands and fulfill the requirements of WIOA. This toolkit includes: (1) How to Use the IET Toolkit; (2) Fundamentals of IET Programs; (3) IET Programs in Practice; (4) Guiding Principles of Quality IET Program Design; and (5) IET Readiness Assessment.