This report describes the development of the 1969-70 Michigan Educational Assessment measures used in assessing the levels and distribution of educational performance for Michigan's districts, schools, and pupils. The report has four sections. The first section contains a brief description of the 1969-70 assessment program, including a statement of purposes and a summary of procedures. The second section explains in detail the construction of both the achievement portion of the battery and the pupil questionnaire. Section three describes the development of the scaled scores arising from the statistical treatment of responses to the items in the various parts of the battery. Nine such scores were developed. Section four deals with the characteristics of the battery components. (Author/DB)