This user manual provides students, teachers, counselors, and other school personnel with a set of practical instruments and procedures designed to measure the generalizable communications skills of students in secondary vocational programs. These instruments, strategies, and procedures are intended for diagnostic and prescriptive purposes regarding the functional learning abilities and problems of students having difficulty in successfully completing vocational programs. The first section describes the list of generalizable communications skills areas and skills. The second, third, and fourth sections describe the Student Self-Ratings Instrument, Teacher Ratings Instrument, and Performance Test, respectively. These three sections provide information regarding the assessment procedures, including instrument development, item analysis, reliability, validity, administration, scoring, and uses. The fifth section describes how the Student Self-Ratings and Teacher Ratings can be used in combination with the Performance Test assessment instrument and how the scores may be used and interpreted. Appendixes present the list of generalizable skills charts, additional important communications skills, Student Self-Ratings, Teacher Ratings, and Performance Test and answer key. (YLB)