This document is a guide to vocational assessment of secondary school students, especially those who have disabilities. It was developed for use in Fayette County, Kentucky, but can be adapted for use in other areas. The nine sections of the guide discuss the background and procedures for conducting student assessments. The first four sections of the guide explain the importance of assessment, describe such components of assessment as job analysis, determine how an in-school assessment is different, and discuss disabilities and their effects upon assessment. The assessment process is detailed in section five, the longest section. Implementation, phases, staff orientation, recommended forms, and reports are included. This section is followed by a description of the Fayette County Vocational Assessment Center, an evaluator's checklist for implementing vocational assessment in school, and a discussion of staff qualifications and duties in the evaluation process. The final section discusses special considerations of specific handicapping conditions. Appendixes, amounting to more than half of the document, contain a bibliography of vocational assessment instruments, cover adaptations of instruments, provide forms, describe staff development packets that are available, and list other resources. (KC)