This mixed methods study explores one urban elementary classroom's use of stability ball chairs. Through surveys, interviews, and video observation, we investigated the teacher and her students' experiences in changing from traditional chairs to more active furniture. Results indicate that students' preferences for using the stability ball chairs was complemented by the teacher's belief that they were more productive. Additionally, the teacher's use of various classroom management strategies shifted towards more behavioral corrections after the implementation of the stability ball chairs. Findings have implications for the impact of innovative furniture on teacher and student experiences.