This handbook provides teachers and school administrators with a guide for the selection, preparation, and assignment of teacher aides; sets forth practical information for teacher aides; and presents preparation programs. Four major areas concern an introduction, selection of teacher aides, preparation programs, and assignment of teacher aides. The introductory chapter provides an overview of the administrative responsibility, the teacher and aide relationship, and the teacher aide. The second chapter presents the pattern of selection of teacher aides. Major concerns include determination of needs, tasks aides can perform, organizational patterns, recruitment of teacher aides, application and evaluation of written applications and interview sessions. The chapter concerning preparation programs presents three methods of organization for the teaching of these lessons. The assignment of teacher aides reviews the areas of responsibility, flexibility, growth, and evaluation. The handbook is designed to help teacher aides as well as administrators. (MJM)