This article examines teacher concerns during the implementation of response to intervention at a small, rural elementary school. The Stages of Concern Questionnaire (George, Hall, & Stiegelbauer, 2008) was administered three times over the course of the academic year to 46 teachers and school staff. The hypothesis was that teacher concerns would follow the concerns predicted by the Concerns-Based Adoption Model and that concerns would change over time. Results supported the hypothesis that teacher concerns change over time, and concerns reflected a nonuser and inexperienced user profile, as predicted by the model.