To prepare for implementing competency based education, a system to categorize diagnostic and prescriptive materials was needed. The Annehurst Curriculum Classification System (ACCS), which provides access to curriculum resources for students and teachers, was applied at the elementary and middle school levels. Training programs on ACCS were held for both teachers and students. An initial study of 3,212 events which led to adoption of ACCS, was conducted to ascertain: the time materials are used; number of materials used by each student; group mode of instruction utilized; types of materials used; curriculum areas covered; and human and perceptual characteristics of the materials. It was concluded from logs and accompanying material that: at least seven curriculum materials were used daily by students; large group instruction was used most in grades 1, 4, and 5; individual instruction was observed more in grades 2, 3, 6, 7, and 8; small group instruction was the least used method; more than half the materials used were worksheets or books; nearly 40 percent of curricular events were language arts; and almost half the materials were classified as highly motivational. The differences in results between elementary and middle schools are discussed. (MH)