The efficacy of three behavior management techniques used in a Head Start classroom was examined. The three techniques included: (a) techniques currently used by the teacher, (b) response cost, and (c) the Level System (token economy). The current study used an ABACA single subject withdrawal design with follow-up where all conditions were implemented until stability was reached. Classroom behavior was evaluated by both behavioral observation and teacher report. Children's and teacher's behavior were examined. No conclusions could be made concerning the efficacy (i.e., inappropriate behavior) of the techniques. Teachers used more labeled praise statements and fewer critical statements during the Level System condition than all other conditions. (Contains 4 figures.)