The handbook is designed for use by administrators, teachers, and instructional aides in the Aides to Career Education (ACE) Program. The program provides assistance to academically, socially, economically, and culturally disadvantaged students in secondary vocational programs by employing instructional aides who are subject field specialists to assist in improving students' educational performance and employment potential. The handbook contains information on: program implementation, purpose of the handbook, program goals and purpose, description and characteristics of disadvantaged students, the roles of the teacher and instructional aide, delineation of the teacher/aide role (includes a differentiation through task analysis)' program accountability, and aide attendance information. Appended material (124 pages) includes: a guide for using audiovisual aids, California legislation affecting instructional aides, referral agencies list (Los Angeles area), rules and regulations for school personnel, an explanation of selecting a career and getting a job, description of the Pasadena City College two-year teacher aide program, job descriptions for monolingual English aides in 15 subject fields, job descriptions for Spanish language aides (written in English) in 13 subject fields, sample instructional aide exams, self-evaluation questions, and a 27-item annotated bibliography. (Author/MS)