This document is a monograph in a personnel development series addressing issues that are pertinent for policy-making personnel concerned with teacher certification and personnel preparation of those who service handicapped students on the secondary level. The discussion is divided into three major sections. Section 1 focuses on trends in teacher certification and personnel preparation. Section 2 offers guidelines for creating changes in teacher certification and personnel training. Three avenues through which changes could be facilitated are discussed: interagency collaboration, professional organization involvement, and individual professional attitude change. Section 3 describes two personnel preparation models that are examples of certification emphasizing vocational education and special education. (YLB)