This document is a monograph in a personnel development series addressing issues that are pertinent for policy-making personnel concerned with interagency/interdepartmental coordination and personnel preparation to benefit handicapped students. Section 1 discusses the coordination process between special education, vocational education, and vocational rehabilitation. Section 2 focuses on the importance of personnel development of administrators and teachers to interagency/interdepartmental coordination. In section 3 a series of personnel development methods to prepare personnel to implement cooperative agreements is described, including conferences, inservice workshops, school-based activities, community-based activities, preservice methods, and graduate programs. Section 4 offers recommendations for personnel development for interagency/interdepartmental cooperation at local, state, federal, and preservice levels. Appendixes include materials for personnel development activities. (YLB)