To effectively determine each student's ability to read and learn in each content area, reading teachers need a group inventory which will evaluate both the study skills and reading skills necessary for success in their content area. This paper presents a model for the development and implementation of a Reading and Study Skills Inventory (RASSI). The development of the RASSI should include readability analysis of instructional materials used in the content area, the construction of group and individual reading inventories based upon the skills required by the instructional materials and skills identified by instructors as being necessary for academic success in their content area, and the development of an examiner's manual and interpretation guide. The development, administration, interpretation, and implementation of a Reading and Study Skills Inventory demand the cooperation of content area teachers and reading specialists. Through this interdisciplinary communication and cooperation, a school faculty can develop an effective instrument to evaluate the reading and learning abilities of each student in each content area. (TS)