The booklet presents guidelines for implementing Massachusetts Chapter 688, which provides for a 2-year transitional process to plan for habilitative services for severely disabled young adults who will lose their entitlement to special education upon graduation or reaching the age of 22. The law is intended to serve individuals who traditionally have not fit into any agency. Eligibility information and the process by which eligibility determination is made are considered. The process of implementing 688 is then reviewed from eligibility and referral and monitoring by the Bureau of Transitional Planning and the Transitional Advisory Committee to development of an approved individual transition plan (ITP). The roles of the school district and the transitional agency are examined. Contents of referral forms are explained, and the development of the individualized transition plan, a service planning document, is reviewed. Preceding a glossary and sample forms is a discussion of the Bureau of Transitional Planning, the central coordinator of the Chapter 688 process. The document concludes with a copy of Chapter 688. (CL)