This learning module, one in a series of 127 performance-based teacher education learning packages focusing upon specific professional competencies of vocational teachers, deals with assessing student affective (attitudinal) performance. Addressed in the individual learning experiences are the following topics: understanding the rationale and techniques for assessing student affective performance (major categories in the affective domain, assessment items and techniques, and semantic differential scales); constructing five different types of evaluation items and devices to assess achievement of a given affective performance objective (essay items, problem-solving items or case studies, oral examinations, attitude scales, and checklists); administering a test; and assessing student affective (attitudes) performance in an actual teaching situation. Each learning module contains some or all of the following: an objective, instructional text, one or more learning activities, and a feedback activity. (MN)