Levels of use of the innovation represent behaviors demonstrated by individuals as they grow in the process of innovation implementation. Eight levels of use have been defined, ranging from lack of knowledge about the innovation through highly sophisticated, impact-oriented use. Operational definitions include seven categories of adopter knowledge and activity. A Level of Use Interview procedure has been developed, which assigns a level of use to any individual with respect to any specified innovation. Reliability and validity have been established. Levels of use are useful to administrators, evaluators, and researchers responsible for facilitating, monitoring, and/or evaluating educational change. (Author)