This document evaluates five protocol material units developed by the Protocol Materials Development Project, University of Colorado. The five units were a) Conceptualizing the Process of Instruction; b) Learners and Their Characteristics: Implications for Instructional Decision-Making; c) Verbal Interaction in the Cognitive Dimension: The Relationships Between Teacher Verbal Behavior and Student Response; d) Organizing Facts to Teach Meaningful Relationships; and e) Fair Verbal Response. The rationale and objectives for evaluation, procedures for conducting field tests, and results are detailed. Procedures are described in four areas: selection of field test instructor and students, selection of the comparison group, the instruments and collection and treatment of the data, and the return of the data. Results are described and conclusions indicated. Appendixes include related research material. (MJM)