This instrument is designed to provide data on the characteristics of the instructional design of classroom materials. Data is gathered on four constructs: objectives, organization of the material (scope and sequence), methodology, and evaluation. Questions elicit a mixture of yes-no, check list, and summary rating scale answers with open ended responses permitted where an exception to the listed approaches is encountered. The rater progresses through an atomistic analysis of the material to a numerical summary rating of the construct. In this study twenty-five graduate students rated two instructional packages, a reading package and a science package. Ratings were done individually and by groups. Individual responses showed agreement in 56 of 64 responses. Some of the limitations of the questions and the few disparities between individual and team evaluations are discussed. Inter-rater reliability scores both for each of the ratings on the constructs and the overall score were greater than .9. Inter-item reliability estimates were: objectives .38, organization of material .37, methodology .77, evaluation .99, and overall .55. A follow-up study with teachers after they have assessed materials with the instrument is suggested. Finally, general issues in instructional design are discussed. The instrument and a comprehensive glossary are included. (Author/GS)