The purpose of this study was to explore the feasibility of sit-to-stand desks in a middle school classroom. Participants used sit-to-stand desks during health class. Momentary time sampling was used for physical activity and behavioral observations. Results indicate students sat 37%, stood 59%, and walked 4% of the time. Misbehaviors occurred 4% of the observed period. The following themes emerged: focus, freedom, distractions, and design. Sit-to-stand desks appear to encourage standing during instruction while simultaneously limiting misbehaviors. Students indicated some distractions but were generally positive toward desk implementation and suggested they supported learning behaviors. The teacher echoed most of the student themes.