Research has shown efficacy exerts a powerful influence on behavior. Classroom management represents one vehicle for demonstrations of these behaviors, yet few instruments focus solely on the measurement of this domain-specific form of efficacy. This research explored the relationship between teacher self-efficacy and classroom management through the development and validation of the Efficacy for Classroom Management Scale (ECMAN). Results indicated two factors may contribute to teachers' self-efficacy for classroom management. Additional analyses revealed scores on ECMAN were correlated with a previously validated instrument for measuring efficacy. Implications are described relative to additional validation efforts and prospective uses for the instrument.