Because individual teachers have ultimate control over the implementation of educational innovations, their feelings toward innovation are of interest to educational researchers. The Concerns-Based Adoption Model was based on research findings about educational dissemination and change. The model describes adoption of innovation as a growth process. Each teacher, according to this model, experiences a characteristic sequence of concerns as an innovation is implemented: (1) awareness; (2) information; (3) personal; (4) management; (5) consequence; (6) collaboration; and (7) refocusing. The Stages of Concern Questionnaire was developed to measure teachers' positions concerning an educational innovation. It was developed from the statements made by 300 elementary school and college teachers about their own concerns, and factor analysis was used to select 35 items which loaded highly on the seven concerns of the model. Test reliability was satisfactory, based on internal consistency estimates of .64 to .83, and test-retest reliability of .65 to .86. Research studies have supported the test's validity. Some longitudinal studies have also demonstrated that teachers, over time, pass through the hypothesized stages. (GDC)