The goal of Project VAST (Virginia's Approach to Services for Transitioning) is to develop, implement, and evaluate a model at both state and local levels which ensures that students with disabilities who move through Virginia's public school programs and into the community will receive transitional services focusing on career preparation, employment, independence, and successful life adjustment through a formal organized case management system. The Project features: interagency planning for service delivery; establishment of a State Interagency Transition Task Force to develop a transition process that integrates and develops case management processes and procedures among service providers; development of a computerized transition resource information system and a computerized tracking and follow-up system; and involvement of consumers, their parents, employers, and human service professionals. Within each selected locality, Local Interagency Transition Teams (LITT) are developed to implement and administer the project. This implementation handbook provides a rationale for a transitional service delivery system, and procedures for LITT training, participant identification and selection, transition planning, and service implementation. Appendices include descriptions of participating agencies, descriptions of Virginia's major transitional initiatives, a Project VAST training package, project implementation forms, and a glossary of terms. (JDD)