This monograph discusses development and implementation of positive behavioral intervention plans with students who have emotional and/or behavioral disorders. It focuses on four steps of a 10-step methodology using functional behavioral assessment and intervention. Emphasis is on the use of positive behavioral intervention plans and supports as encouraged by the 1997 Amendments to the Individuals with Disabilities Education Act. A rationale for this approach is offered which focuses on the need to understand the function of an inappropriate behavior and to replace it with a suitable behavior that serves the same function. This guide details the following steps: (1) develop and implement a behavioral intervention plan (including plan elements, strategies to address behavior functions, student supports, and reinforcement); (2) monitor faithfulness of implementation of the plan; (3) evaluate effectiveness of the behavioral intervention plan; and (4) modify the behavioral intervention plan. It also briefly addresses obstacles to effective functional behavioral assessment and behavioral intervention plans and supports. Four appendices include: a functional assessment/behavioral intervention checklist; a positive behavioral intervention plan planning form; a forced-choice reinforcement menu; and a sample crisis/emergency plan. (Contains 46 references.) (DB)