This fifteenth annual report of the METRO evaluation center discusses continuing problems related to user acceptance of controversial materials, lack of and poor quality of film guides, and circulation of the right product to the right user as a preliminary to the evaluation of instructional materials. Based on statistical summaries, predictive instruments, teacher and student reactions, evaluation seminars, and in-house observations, these evaluations cover materials in two categories: 16mm films (251 titles) and building level materials (150 items), which include filmstrips, kits, records, cassettes, study prints, slides, models, and overhead transparencies. The evaluative data are presented as composite sheets drawing together information collected from users, with representative teacher and student comments when available. Also provided are recommendations for the use of the report, guidelines for the preparation of worksheets, and product quality indicators. (Author/RAA)